Question

Find the sum of first 22 terms of an ap in which d=7 and 22nd term is 49​

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

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Step-by-step explanation:

Correct option is

A1661a 22

=149=a+7×21

⇒149−147=2=a

Now, S 22

= 222

(2+149)=11×151=1661

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