question no.18,19,20..... please send the answer.....
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20th and 19th are nearly same
The only difference is 20th is the general case
Just see 19th and you will be able to solve the 20th too
Hope it helps........
:)
The only difference is 20th is the general case
Just see 19th and you will be able to solve the 20th too
Hope it helps........
:)
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mayakhan:
actually answer is wrong
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