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If the first term of an AP is 5 and the common difference is -

Question

If the first term of an AP is $5$ and the common difference is $- 2,$ then the sum of the first $6$ terms is

0

5

6

15

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Luna Discussed

If the first term of an AP is

5

and the common difference is

- 2,

then the sum of the first

6

terms is

11 mins ago

Discuss this question LIVE

11 mins ago

Text solutionVerified

Sum of an AP is:

\frac{n}{2} \times [2 a + (n - 1) d]

a = 5, d = - 2, n = 6

Sum

= \frac{6}{2} \times [(2 \times 5) + (6 - 1) \times (- 2)]

= 3 \times (10 - 10)

= 0

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Question Text	If the first term of an AP is $5$ and the common difference is $- 2,$ then the sum of the first $6$ terms is
Answer Type	Text solution:1
Upvotes	150