Question

The first term of an ap is 2 and last term is 50 the sum

Answer 1

Answer:

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Answer 2

Correct Question : The first term of an AP is 2 and last term is 50. Find the sum.

SOLUTION :

Given,

First term of an AP = a = 2

Last term of the AP = an = 50

Sum of the AP = ?

We know that,

Sum of term in an AP, Sn = n/2 [ a + an ]

Sn = n/2 [ 2 + 50 ]

= n/2 [ 52 ]

= 52n / 2

= 26n

Therefore, the sum of AP is 26n.