Mental Maths Class 5 Integers

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

How many numbers lie between 200 and 300 in which 5 comes only one time?

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A 17
B 18
C 19
D 9

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Answer: B. 18

The correct answer is B. 18.
5 in the units place: 205, 215, 225, 235, 245, 265, 275, 285, 295 (9 numbers)
5 in the tens place: 250, 251, 252, 253, 254, 256, 257, 258, 259 (9 numbers)
Total: 9 + 9 = 18

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How many numbers lie between 200 and 300 in which 5 comes only one time?

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