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1 . The sum of the ages of 5 children born at the intervals of 3 years each is 50 years. What is the age of the youngest child?

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Answer: Option A

Explanation:

Let the age of youngest child be x

then the age of other children ( x + 3) , (x + 6), (x + 9), (x + 12)

Then, x + (x + 3) + (x + 6) + (x + 9) + (x + 12) = 50

5x = 20

x = 4

2 . The sum of the ages of 5 children born at the intervals of 3 years each is 50 years. What is the age of the youngest child?

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Answer: Option D

Explanation:

ধরি, সংখ্যাগুলো , x - 6, x - 3, x, x + 3, x + 6

x - 6 + x - 3 + x + x + 3 + x + 6 = 50

5x = 50

x = 10

সবচেয়ে ছোট শিশুটির বয়স = x - 6 বছর = 10 - 6 বছর = 4 বছর