Math, asked by alijagmal, 5 months ago

which term of the A. P.: 1,4,7,. is 25 ?

Answers

Answered by amitnrw

0

Given : A. P.: 1, 4, 7

To Find : Which term is 25

Solution:

AP

1 , 4 , 7 ........................

a = 1

d = 4 - 1 = 3

aₙ = a + (n - 1)d

aₙ = 25

n = ?

=> 25 = 1 + (n - 1)3

=> 24 = (n - 1) 3

=> 8 = n - 1

=> 9 = n

=> n = 9

9th term of A. P.: 1,4,7,. is 25

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