Q. 1 A3.8( 5 Votes )

Find the indicated terms in each of the following arithmetic progression:

1, 6, 11, 16, ..., t16,

Answer :

Given: 1, 6, 11, 16, …


Here, a = 1


d = a2 – a1 = 6 – 1 = 5


and n = 16


We have,


tn = a + (n – 1)d


So, t16 = 1 + (16 – 1)5


= 1 + 15×5


t16 = 1 +75


t16 = 76


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