Question

find the 10th term of the AP √2,3√2,5√2,...

Answer 1

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Answer 2

Let the first term be a.

common difference be d.

a=√2

d=3√2-√2

√2(3-1)

=2√2

Now 10 th term is a+(10-1)d

=a+9d

=√2+9*2√2

=√2+18√2

=√2(18+1)

=19√2

Hope it helps.