Question

Which term of the A.P ,8,14,20,26...will be 72 more than its 41th term

Answer 1

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Answer 2

Solñ: Here, a=8, d=14-8=6

Let, nth terms is 72

:. an=72

»a+(n-1)d =72

»8+(n-1)×6=72

»(n-1)×6=72-8

»n-1=54/6

»n-1=9

»n=9+1

»n=10

Again,

Sins,an=a+(n-1)d

a41=8+(10-1)6

=8+9×6

=8+54

=72

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