Math, asked by siddu7603, 1 year ago

If an=20 a=2 d=2 find n​

Answers

Answered by anjali3964
3

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Answered by krish171817
1

an = a + (n-1)d

20 = 2 + (n-1)2

2(n-1) = 20-2

2n-2 = 18

2n = 20

n = 20/2

n = 10

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