Question 1

Five friends—Arun, Bhavna, Chetan, Deepa, and Eira—are scheduled to present on five consecutive days: Monday to Friday. Each person presents exactly once. Based on the following clues, who presents on Wednesday?

1. Arun presents two days before Chetan.
2. Bhavna presents on Friday.
3. Deepa presents on Monday.
4. Eira presents one day after Arun.

Who presents on Wednesday?

Accepted Answer

Using constraint satisfaction: Deepa is on Monday (clue 3), Bhavna is on Friday (clue 2). Arun presents two days before Chetan (clue 1), so possible pairs are (Mon, Wed), (Tue, Thu), or (Wed, Fri). Since Monday is Deepa and Friday is Bhavna, only (Tue, Thu) works for Arun and Chetan. Eira presents one day after Arun (clue 4), so Eira is on Wednesday. Verify: Mon=Deepa, Tue=Arun, Wed=Eira, Thu=Chetan, Fri=Bhavna. All constraints satisfied.

Question 2

Four tasks—P, Q, R, S—must be completed on four different days of the same week: Monday, Tuesday, Wednesday, Thursday. Each task is done exactly once. Consider the clues:

1. Task R is completed on Wednesday.
2. Task P is completed one day before Task Q.
3. Task S is completed on Thursday.

On which day is Task Q completed?

Accepted Answer

From clue 1: R is on Wednesday. From clue 3: S is on Thursday. Remaining days: Monday, Tuesday for P and Q. From clue 2: P is one day before Q. So P=Monday, Q=Tuesday. Verify: Mon=P, Tue=Q, Wed=R, Thu=S. All constraints satisfied.

Question 3

Four tasks—A, B, C, D—must be completed on four consecutive days: Day 1 to Day 4. The following conditions apply:
1. Task A is completed before Task C.
2. Task B is completed on Day 2.
3. Task D is completed on Day 4.
4. Task C is not completed on Day 1.

On which day is Task A completed?

Accepted Answer

From condition 2: B → Day 2. From condition 3: D → Day 4. Remaining: A, C for Days 1 and 3. From condition 4: C ≠ Day 1 → C → Day 3. Therefore A → Day 1. Check condition 1: A (Day 1) before C (Day 3) ✓.

Question 4

Four friends—Priya, Qasim, Ravi, and Sana—are born in four different months: February, May, August, and November. Based on the clues below, in which month is Ravi born?

Clue 1: Priya is born in February.
Clue 2: Qasim is born in a month that comes before August.
Clue 3: Sana is born in November.
Clue 4: Ravi is born in a month that comes after May.

Accepted Answer

From Clue 1, Priya is in February. From Clue 3, Sana is in November. Remaining people: Qasim, Ravi for months May and August. From Clue 2, Qasim is in a month before August, so Qasim is in May. From Clue 4, Ravi is in a month after May, so Ravi is in August.

Question 5

Six events—A, B, C, D, E, and F—are scheduled on six consecutive days: Monday through Saturday. Each event occurs exactly once. Based on the clues below, which event is scheduled on Friday?

Clue 1: Event A is scheduled on Monday.
Clue 2: Event C is scheduled exactly two days after Event B.
Clue 3: Event E is scheduled on Saturday.
Clue 4: Event D is scheduled on Wednesday.

Accepted Answer

From the clues: A is Monday, D is Wednesday, E is Saturday. Remaining events: B, C, F for days Tuesday, Thursday, Friday. From Clue 2, C is exactly two days after B. If B is Tuesday, C is Thursday. If B is Thursday, C is Saturday—but E is Saturday. So B is Tuesday and C is Thursday. This leaves F for Friday.

Question 6

Six friends — A, B, C, D, E, and F — each have a birthday in a different month: January, February, March, April, May, and June (not necessarily in that order). A's birthday is in April. B's birthday is two months after A's. C's birthday is in January. D's birthday is one month before C's — but since there is no month before January in this list, D's birthday is in February. E's birthday is in March. Which month is F's birthday in?

Accepted Answer

Step 1: A → April. Step 2: B is two months after April → June. Step 3: C → January. Step 4: D → February (given directly). Step 5: E → March. Step 6: The six months are January, February, March, April, May, June. Months assigned: A=April, B=June, C=January, D=February, E=March. The only remaining month is May. Therefore F's birthday is in May.

Question 7

Five friends—Aman, Bhavna, Chetan, Deepa, and Esha—are scheduled to give presentations on five consecutive days: Monday to Friday. The following conditions apply:
1. Aman presents on Wednesday.
2. Bhavna presents the day after Chetan.
3. Deepa does not present on Monday or Friday.
4. Esha presents on Friday.

On which day does Bhavna present?

Accepted Answer

From condition 1: Aman → Wednesday. From condition 4: Esha → Friday. From condition 3: Deepa → Tuesday, Wednesday, or Thursday. Since Aman is on Wednesday, Deepa → Tuesday or Thursday. From condition 2: Bhavna is the day after Chetan. Remaining people for Mon, Tue, Thu: Bhavna, Chetan, Deepa. If Chetan is Monday, Bhavna is Tuesday. Then Deepa is Thursday. ✓ If Chetan is Tuesday, Bhavna is Wednesday—but Aman is Wednesday. ✗ If Chetan is Thursday, Bhavna is Friday—but Esha is Friday. ✗ Therefore: Chetan → Monday, Bhavna → Tuesday, Deepa → Thursday.

Question 8

A project has four milestones scheduled across four months: January, February, March, and April. Each milestone is assigned to exactly one month. The milestones are: Design, Development, Testing, and Deployment. Based on the clues below, in which month is Testing scheduled?

Clue 1: Design is scheduled before Development.
Clue 2: Testing is scheduled after Development.
Clue 3: Deployment is scheduled in April.
Clue 4: Development is not scheduled in January.

Accepted Answer

From Clue 3, Deployment is in April. From Clues 1 and 2, the order is: Design → Development → Testing. From Clue 4, Development is not in January, so Development is in February or March. If Development is in February, then Design is in January and Testing is in March. If Development is in March, then Design is in January or February, and Testing is in April—but Deployment is in April. So Development must be in February, Design in January, Testing in March, and Deployment in April.

Question 9

Six events—P, Q, R, S, T, U—are scheduled over six months: January to June. The following conditions apply:
1. Event P is in January.
2. Event Q is exactly two months after Event R.
3. Event S is not in January, February, or June.
4. Event T is in May.
5. Event U is in June.

In which month is Event R scheduled?

Accepted Answer

From conditions 1, 4, 5: P → Jan, T → May, U → June. Remaining: Q, R, S for Feb, Mar, Apr. From condition 2: Q is exactly 2 months after R. Possible pairs: (R–Feb, Q–Apr) or (R–Mar, Q–May). But May is taken by T. So R–Feb, Q–Apr. Then S–Mar. Check condition 3: S in Mar ✓ (not Jan, Feb, or Jun). Therefore: R → February.

Question 10

Five employees—Aman, Bhavna, Chitra, Deepak, and Esha—are scheduled for meetings on five consecutive days: Monday through Friday. Each person meets exactly once. Based on the following clues, who meets on Wednesday?

1. Aman meets on Monday or Tuesday.
2. Bhavna meets exactly two days after Chitra.
3. Deepak does not meet on Friday.
4. Esha meets on Thursday or Friday.
5. Chitra does not meet on Monday.

Accepted Answer

This is a scheduling puzzle requiring systematic constraint satisfaction. By testing each clue against possible day assignments, we eliminate invalid combinations until only one arrangement remains.

Question 11

Five doctors—Vikram, Wanda, Xavier, Yuki, Zara—have appointments on five consecutive days: Monday to Friday. Each doctor has exactly one appointment. Using the clues, who has an appointment on Wednesday?

1. Vikram's appointment is on Monday or Tuesday.
2. Wanda's appointment is exactly one day after Xavier's.
3. Yuki's appointment is not on Friday.
4. Zara's appointment is on Thursday or Friday.
5. Xavier's appointment is not on Monday.

Accepted Answer

This scheduling puzzle requires applying both sequential constraints (Wanda = Xavier + 1 day) and exclusion constraints. The solver must test valid (Xavier, Wanda) pairs against other clues.

Question 12

Four friends—Priya, Qasim, Ravi, and Sana—plan to visit four cities—Delhi, Goa, Hyderabad, and Jaipur—on four consecutive days: Day 1, Day 2, Day 3, and Day 4. Each friend visits exactly one city on exactly one day. Based on the clues below, on which day does Ravi visit Hyderabad?

1. Priya visits Delhi on Day 1.
2. Qasim visits Goa on Day 2.
3. Sana visits Jaipur, and this visit occurs after Ravi's visit to Hyderabad.
4. Ravi does not visit on Day 1 or Day 2.

Accepted Answer

This is a scheduling puzzle combining person-city-day assignments with ordering constraints. Students must use elimination and logical deduction to find the unique day for Ravi's visit to Hyderabad.

Question 13

Five projects—P1, P2, P3, P4, P5—are scheduled across five months: January, February, March, April, and May. Each project is assigned to exactly one month. Based on the clues below, in which month is project P3 scheduled?

1. Project P1 is scheduled in January.
2. Project P4 is scheduled in May.
3. Project P2 is scheduled exactly one month before project P5.
4. Project P3 is scheduled after project P2 but before project P5.

Accepted Answer

This is a month-based scheduling puzzle testing the ability to use interval constraints ('one month before') and chained ordering ('after X but before Y') to deduce a unique solution.

Question 14

Six events—P, Q, R, S, T, U—are scheduled across six months: January through June. Each event occurs in exactly one month. Using the clues below, in which month is event R scheduled?

1. Event P occurs in January.
2. Event Q occurs exactly two months after event T.
3. Event S occurs in June.
4. Event U occurs in March.
5. Event R occurs before event Q.

Accepted Answer

This is a month-based scheduling puzzle requiring students to use relative positioning ("two months after") and ordering constraints ("before") to deduce a unique solution.

Question 15

Five employees—Arun, Bhavna, Chitra, Deepak, and Esha—are scheduled to work on five consecutive days: Monday through Friday. Each works exactly one day. Based on the following clues, on which day does Chitra work?

1. Arun works on Wednesday.
2. Bhavna works the day immediately before Deepak.
3. Esha works on Friday.
4. Chitra does not work on Monday or Tuesday.

Accepted Answer

This is a scheduling puzzle requiring constraint satisfaction. Students must place five people across five days using four clues. The solution is found by eliminating impossible positions step-by-step.

Question 16

Seven tasks—A, B, C, D, E, F, G—are assigned to seven days of a week (Monday through Sunday). Each task is assigned to exactly one day. Based on the following clues, on which day is task E assigned?

1. Task A is assigned on Monday.
2. Task C is assigned on Friday.
3. Task B is assigned exactly two days after task D.
4. Task G is assigned on Sunday.
5. Task E is assigned before task F.

Accepted Answer

This is a weekly scheduling puzzle combining fixed anchors, interval constraints, and ordering rules. Students must deduce the position of E by eliminating impossible placements.

Question 17

Six tasks—P, Q, R, S, T, U—must be completed on six consecutive days: Monday to Saturday. Each task is assigned to exactly one day. Using the clues below, which task is scheduled for Thursday?

1. Task P is scheduled before Task Q.
2. Task R is scheduled exactly three days before Task T.
3. Task S is scheduled on Tuesday or Wednesday.
4. Task U is scheduled on Friday or Saturday.
5. Task Q is not scheduled on Saturday.

Accepted Answer

This scheduling puzzle requires identifying valid day assignments by applying sequential and positional constraints. The solver must use the 3-day gap constraint to anchor the solution.

Question 18

Six events—Event 1, Event 2, Event 3, Event 4, Event 5, Event 6—are scheduled over six consecutive days: Monday to Saturday. Each event occurs exactly once per day. Based on the following clues, which event is scheduled for Friday?

1. Event 1 is scheduled on Monday.
2. Event 3 is scheduled exactly two days after Event 2.
3. Event 4 is scheduled on Tuesday or Wednesday.
4. Event 5 is scheduled on Thursday or Friday.
5. Event 6 is not scheduled on Saturday.

Accepted Answer

This six-event scheduling puzzle tests the ability to apply a fixed anchor (Event 1 on Monday), a 2-day gap constraint (Event 3 = Event 2 + 2), and multiple positional constraints. Systematic elimination of invalid configurations yields the unique solution.

Question 19

Seven meetings—A, B, C, D, E, F, G—are scheduled across seven days: Monday to Sunday. Each meeting occurs exactly once. Determine which meeting is on Saturday using these clues:

1. Meeting A is on Monday.
2. Meeting C is exactly two days after Meeting B.
3. Meeting E is on Wednesday or Thursday.
4. Meeting F is on Friday or Saturday.
5. Meeting D is not on Sunday.
6. Meeting G is on Sunday.

Accepted Answer

This seven-day scheduling puzzle tests constraint application with a fixed anchor (A on Monday, G on Sunday) and a 2-day gap constraint. The solver must systematically place remaining meetings.

Question 20

Six employees—Anil, Bhavna, Chitra, Deepak, Esha, and Farhan—are scheduled to work shifts across three days (Monday, Tuesday, Wednesday), with exactly two employees per day. The following constraints apply:

1. Anil works on Monday or Tuesday, but not Wednesday.
2. Bhavna works the day immediately after Chitra (if Chitra works on Monday, Bhavna works on Tuesday; if Chitra works on Tuesday, Bhavna works on Wednesday).
3. Deepak and Esha do not work on the same day.
4. Farhan works on Wednesday.
5. If Anil works on Monday, then Deepak works on Tuesday.
6. Chitra does not work on Wednesday.

Who works with Farhan on Wednesday?

Accepted Answer

This is a constraint-satisfaction scheduling puzzle requiring systematic elimination and forward-chaining logic. The solver must identify that Farhan is fixed on Wednesday, then use the chain of dependencies (Bhavna depends on Chitra's day, Anil's day determines Deepak's day, and Deepak-Esha exclusivity) to deduce the unique valid assignment.

SSC CPO Scheduling / Day-Month Puzzle

Scheduling / Day-Month Puzzle— Rules & Concept

Key Points to Remember

Exam-Specific Tips

Scheduling / Day-Month Puzzle — Practice Questions

60-Second Revision — Scheduling / Day-Month Puzzle