Math, asked by sonyjunior045, 9 months ago

what is the sum of 1st 20 natural numbers find the sum of 1st 20 terms of 4,8,12.... if 3is added to each term of the above sequence write down the algebric expression of the sequence

Answers

Answered by amanbiswas121259

3

PLEASE GIVE ME A BRANLIAST ANSWER AND FOLLOW ME

By guas formula {n(n+1)}/2

put n=20

we get 210

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