Question

Write the first four terms of A.P whose first term is -48

Answer 1

Let All other three terms of A.P. be (a+2d)(a+3d)(a+4d) and
The first term a=-48 , therefore..
For 2nd term..... (a+2d)= -48+2d....
=>48=2d..
=>d=48/2....
=>d=24...
therefore......2nd,3rd,4th term are...
1st=-48
2nd=a+2(d)...=>-48+2(24)...=>-48+48=>0
3rd=a+3(d)....=>-48+3(24)...=>-48+72=>24
4th=a+4(d)....=>-48+4(24)...=>-48+96=>48
therefore first four terms of A.P. are...
-48,0,24,48......