Question

(ii) Complete the following activity to find the number of terms in the A.P. 1,3, 5.
149.
Here, a -1, de 0.1. - 149
1-a+

149
... 149=2n-
..=75.​

Answer 1

Answer:

n=?

a=1,d=2. and tn=149

tn= a+(n-)d

149=1+(n-1)2

(n-1)2=148. (149-1=148)

(n-1)=148/2=74

n=74+1=75