Mental Maths Class 5 Playing with Numbers

Asked by AKSHAY GURU VARADHARAJAN · SRI CHAITANYA TECHNO SCHOOL, JAYANTI NAGAR.

How many numbers between 11 and 99 are exactly divisible by 4?

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Answer: B. 22

The multiples of 4 between 11 and 99 are 12, 16, 20, ..., 96.
Count = (96 - 12) / 4 + 1 = 21 + 1 = 22.

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