Assertion and reasoning — task. Maths CBSE Live product, Class 8 (2026-27).

Select the best answer:

Assertion(A): Every triangular number is a perfect square.

Reason(R): Triangular numbers are formed by adding consecutive natural numbers.

Both assertion(A) and reason(R) are true, and reason(R) is the correct explantion of assertion(A).
Both assertion(A) and reason(R) are true, but reason(R) is not the correct explanation of assertion(A).
Assertion(A) is true, but reason(R) is false.
Assertion(A) is false, but reason(R) is true.

Did you find an error?

3. Assertion and reasoning