Question

which of the term of a.p 5,2,-1,........ is -49?​

Answer 1

Heya Mate

First term (a) = 5

Common difference (d) = 2 - 5 = -3

tn = -49

Now ,

tn = a + (n - 1) d

or, -49 = 5 + (n - 1) -3

or, -49 -5 = -3n + 3

or, -54 - 3 = -3n

or, -57 = -3n

or, -57 = n

-3

.: n = 19

Hope it helps u a lot!