SSC CPO Number System Questions

A number is divisible by 5 if its last digit is 0 or 5. How many two-digit numbers are divisible by 5?

If 2/5 of a number is 48, what is the number?

Which number is divisible by 11?

Which of the following numbers is divisible by 3?

Simplify: 3² + 4² − 5 × 2

Express 0.625 as a fraction in its simplest form.

Evaluate: 60 ÷ 5 + 4 × 3 − 2

What is 40% of 250?

Find the next number in the series: 2, 6, 12, 20, 30, ?

A number is divisible by 4 if its last two digits form a number divisible by 4. Which of the following is NOT divisible by 4?

Which of the following numbers is divisible by both 6 and 8?

Simplify: (75 × 4) ÷ (25 − 15) + 12

What is the LCM of 24, 36, and 48?

What is the missing number in the series: 5, 10, 20, 40, ?, 160?

If 2^(x+1) × 2^(x-1) = 256, find the value of x.

Rationalize: 1/(√7 - √5). Express in the form (a√7 + b√5)/c where a, b, c are integers.

Simplify: (3^(1/2) × 3^(1/3)) / 3^(1/6)

If √(x + 5) = 7, find x.

Simplify: (2^3)^(2/3) × (2^2)^(1/2)

If 3/7 of a tank is filled with water and the tank holds 280 litres, how many litres of water are in the tank?