Multiple choice general knowledge math & puzzles

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

  1. 6 Years.

  2. 4 Years.

  3. 3 Years.

  4. 5 Years.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Let the youngest child's age be x. The ages are x, x+3, x+6, x+9, x+12. Sum = 5x + 30 = 50, so 5x = 20 and x = 4. The arithmetic progression with common difference 3 is the key structure. Checking: 4 + 7 + 10 + 13 + 16 = 50.

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