Question

find the 10 term of the ap 6,-4,-14,_24,.....

Answer 1

a=6
d=T2-T1
d=-10

T10=a+(n-1) d
T10=6+(10-1)-10
T10=6+(9)-10
T10=6-90
T10=-84


Therefore the 10th term of AP is - 84

Answer 2

Here first term, a = 6

Common difference, d = - 4 - 6 = - 14 - (- 4) = -(10)

To find the nth term in AP, a₍n₎ = a+(n-1)d

Here n= 10 , a₁₀ = a + (10-1) d

                          = 6 + 9× - 10

                           = 6 - 90 = - (84 )