How many terms of the AP 18,16,14,12 ,….. Are needed to given the sum 78 ?
Explain the double answer.

How many terms of the A.P. 18, 16, 14, 12,…. are needed to give the sum 78?

How many terms of the AP is -6,-11/2,-5 ,…. Are needed to give the sum -25 ?

How many terms of the A.P. 1,4,7,... are needed to give the sum 925 ?

How many terms of the AP 26,21,16,11,…. Ar needed to give the sum the sum 11 ?

How many terms of the A.P. 54 ,51 , 48 …….. Are needed to give the sum 513 ?

How many terms of the A.P. 16,14,12……….. are needed to given the sum 60 ? Explain why do we get two answers.

How many term of the A.P. 15 , 12, 9 ., - are needed to give the sum 15 ? Explain the duble answer .

How many term of the A.P. 15 , 12, 9 ., - are needed to give the sum 15 ? Explain the duble answer .

How many terms of the A.P. 1,4,7.... are needed to give the sum 715?

How many terms of the A.P. 16,14,12,….are needed to obtain the sum 60 ? Explain why we get two answers.