Question

2. For the given Arithmetic sequence 5, 1, -3, -7, ……. Find out when will it take the value -91

Answer 1

Answer:

25th term have -91

Step-by-step explanation:

a= 5 and d= -4

then a+(n-1)d = -91

so, 5 + (n-1)* -4 = -91

(n-1)* -4 = -96

n-1 = -96/-4 = 24

and n= 25