Answer the following questionsFind the sum of an AP 2,7,12, to 25 term

1.	Answer the following questionsFind the sum of an AP 2,7,12, to 25 terms
Answer» ANSWER: 2 + 7 + 12 + ----- + a25 This numbers are in AP. first term, a = 2 common difference, d = 7 - 2 = 5 sum of first n terms in an AP = $\frac{n}{2} (2a + (n - 1)d)2n(2a+(n−1)d)$ sum of first 25 terms for n = 25 is $\frac{25}{2} (2 \times 2 + (25 - 1)5)225$ 5(2×2+(25−1)5) = 1550=1550 HOPE THIS ANSWER HELPS YOU...

Answer the following questionsFind the sum of an AP 2,7,12, to 25 terms

Answer»

ANSWER:

2 + 7 + 12 + ----- + a25

This numbers are in AP.

first term, a = 2

common difference, d = 7 - 2 = 5

sum of first n terms in an AP =

$\frac{n}{2} (2a + (n - 1)d)2n(2a+(n−1)d)$

sum of first 25 terms for n = 25 is

$\frac{25}{2} (2 \times 2 + (25 - 1)5)225$ 5(2×2+(25−1)5)

= 1550=1550

HOPE THIS ANSWER HELPS YOU...

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Answer the following questionsFind the sum of an AP 2,7,12, to 25 terms​

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Answer the following questionsFind the sum of an AP 2,7,12, to 25 terms