Math, asked by tusharsharma4647, 19 days ago

24. What is the sum till 40th terms of 5+9+13 +17...

Answers

Answered by 10ayushranjan

1

Answer:

ANS - 3320

Step-by-step explanation:

Here a=5 , d=4 , n=40

Sum - n/2(2a + (n-1)d)

= 40/2(10 + 39x4)

= 20x (166)

= 3320

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