Question

6 th and 8 th term if an A.p are 12 and 22 respectively it's second term is(1) 8 (2) -8 (3) 6 (4) -3​

Answer 1

Answer:

formula for 6 th term = a + 5d = 12

formula for 8th term = a + 7d = 22

Subtract

a +7d = 22

a+ 5d = 12

2d = 10

d = 5

put value of d = 5 in a + 7d =22

a +7(5)= 22

a +35 = 22

a = -13

formula of 2nd term = a+d

-13 + 5 = -8

correct option is B) -8