Question

The first two term in a AP are 5 and 9.the last term in the progression is the only term which is greater than 200.find the sum of all the terms in the progression.

Answer 1

step 1 : calculation of n using last term in AP formula

step 2 : using the value of n calculated in step 1 to calculate sum of terms using AP sum of terms formula

Cambridge International AS and A level Mathematics.

9709 Paper 11 Q8 June 2011

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