Question

*Q2) Which term of the given AP 2,-1,-4,-7 is -40?​

Answer 1

Answer:

15 th term of the AP is -40

Answer 2

a = 2

d = -3

ap = -40

ap = a+(n-1) d

-40 = 2 + (n-1) -3

-40 -2 = -3n+3

-42-3 = -3n

-45 = -3n

$\frac{45}{3} = 15$

thus, n= 15