When we add fourth and fifth triangular number we get ______(a) 5^2(b) 6^2(c) 25^2(d) 25^3I got this question by my school principal while I was bunking the class.This intriguing question originated from Patterns in Squares of Numbers topic in portion Squares and Square Roots of Mathematics – Class 8

When we add fourth and fifth triangular number we get ______(a) 5^2(b)

1.	When we add fourth and fifth triangular number we get ______(a) 5^2(b) 6^2(c) 25^2(d) 25^3I got this question by my school principal while I was bunking the class.This intriguing question originated from Patterns in Squares of Numbers topic in portion Squares and Square Roots of Mathematics – Class 8
Answer» Right answer is (a) 5^2 Easiest explanation: The fourth and fifth triangular numbers are 10 & 15. 10 + 15 = 25 = 5^2. Therefore 5^2 is the CORRECT answer and the other options are incorrect. The options should be read carefully as the options are very close.

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