How many two-digit numbers are divisible by 5?

Question

Question

This question was previously asked in

RPF Constable 2024 Official Paper (Held On 03 Mar, 2025 Shift 1)

Answer 1

Formula used:

To find the count of numbers divisible by 5 in a specific range, use the formula:

Count = ^{last number - first number} / 5 + 1

Calculation:

First two-digit number divisible by 5 = 10

Last two-digit number divisible by 5 = 95

Count = ^{95 - 10} / 5 + 1

⇒ Count = ⁸⁵ / 5 + 1

⇒ Count = 17 + 1

⇒ Count = 18

∴ The correct answer is option (4).

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