Question

an ap consists of 8
70 terms of which the 6 term is 25 and the last term is 57 find 35 term​

Answer 1

I hope it will be answer of your question

Answer 2

Answer:

Step-by-step explanation:

given that

n=70

a6=25

a70=57

than

a6=25

a+5d=25_________eq1

and also

a70=57

a+69d=57__________eq2

by applying elimination in eq1 and eq2 we get d=1/2

and putting value of d in eq1

a+5d=25

a+5×1/2=25

a+5/2=25

a=25-5/2

a=22.5

a35=22.5+34×1/2

a35=22.5+17

a35=39.5