Question

Please solve the 19th question...please

Answer 1

Answer:

here's your answer ..

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Answer 2

We will take MTH term as a+(m-1)d and nth term as a+(n-1)d

ATQ n*nth term=m*Mth term

n(a+(n-1)d )= m(a+(m-1)d )

By solving this further you will get the answer as ...

a+md=0