Question

Which of the following numbers does not fit in the given series?
$0,1,3,6,10,15,21,28,37,45$

• A. $0$
• B. $21$
• C. $37$
• D. $45$

Answer 1

Answer: (C)

$37$

Given series is $0,1,3,6,10,15,21,28,37,45$

The $n^{th}$ term in the given series can be expressed in a general form as $\frac{n(n+1)}{2}$.

Clearly, putting $n=8$ gives $36$

So, option C is the right answer.