1.

Usingthe mathematicalinduction , show that forany naturalnumbern le 2 1/ (1 +2) + 1/( 1 + 2+3) + 1/( 1 + 2+3+4)+ ….+ 1/( 1+2+3+….+n)= ( n -1)/(n+1)

Answer»


ANSWER :RHS


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