Question

First term of Ap be 5 and 4th term of Ap is 91/2 then find the 2nd term and 3rd term of Ap

Answer 1

Answer:

NB: a is first term

d is common difference

n is number of terms

T= a + (n-1)d

a =5

T4 = a+ (4-1)d

T4= a+3d

a+3d =91/2

in other to find the other terms that is the second and third terms, we need to find the common difference and we can find that by using the 4th term since we have the first term and the answer of the fourth term.

5+3d=91/2

to clear the fraction, multiply b/s by 2

10+6d=91

6d=81

d=81/6

d= 27/2

second term

a+d

5+27/2

second term = 37/2

third term

a+2d

5+2(27/2) 2 cancles out 2

5+27= 32

that's it

hope this was ok for you