List of top Mathematics Questions on Sum of First n Terms of an AP asked in KEAM

In an A.P., the first term is 3 and the last term is 17. The sum of all the terms in the sequence is 70. Then the number of terms in the arithmetic sequence is

In AP, \( a_k=5k+1 \). Find sum of first 100 terms

The sum of odd integers from 1 to 2001 is

In AP, \( a_k=5k+1 \). Find sum of first 100 terms

The sum of odd integers from 1 to 2001 is

The sum of odd integers from 1 to 2001 is:

If $a_1, a_2, a_3, a_4$ are in A.P., then $\frac{1}{\sqrt{a_1} + \sqrt{a_2}} + \frac{1}{\sqrt{a_2} + \sqrt{a_3}} + \frac{1}{\sqrt{a_3} + \sqrt{a_4}} =$