Ask a New Question

The 18th term of an A.p is 25.(a) find it's first term when the common difference is 2.(b) what term of an A.p gives 49

4 answers

its, not it's in this context.

a+17d = 25

since d=2, it is simple to get a.

Then, since 49-25=24, and 24/2 = 12, the 18+12=30th term is 49.

Solve it mathematically

Pls solve this questions

T18=a+17d=25
T18=a+(18-1)d
T18=a+17d=25
a+(17×2)=25
a+34=25
a=25-34
a=-9

Ask a New Question or answer this question.

Similar Questions

The sum of 18th term of an a.p is 549 given that the common difference is 3 find the 56th term and also the sum of the its 32
1. 2 answers
The sum of sixth term of a.p is 72 and the second term is seven times fifth term find the first term,common difference and the
1. 3 answers
The first term and last term of an arithmetic progression are -3 and 145 respectively .if the common difference is 4.(a) find
1. 2 answers
In an arithmetic progression the 22nd term is four times the 5th term while the 12th term is 12th more than 8th term.find the
1. 2 answers

more similar questions