Q. 2 B4.5( 12 Votes )

Find:

the 35th term of the AP 20, 17, 14, 11, .

Answer :

Here, First term = a = 20

Common difference = d = 17 - 20 = - 3


To find = 35th term, n = 35


Using the formula for finding nth term of an A.P.,


an = a + (n - 1) × d


an = 20 + (35 - 1) × (-3)


an = 20 + 34 × (-3) = 20 - 102 = - 82


20th term of the given AP is - 82.


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