Question

which of the following is an A.P. A)3,5,7,10...... B)3,6,12,24..... C)1/2,1/3,1/4,1/5 D)2,9,16,25

Answer 1

Step-by-step explanation:

in an a. p common diffrence(d) is same

and d=a2-a1

in A option series is

3,5,7,10....(here some mistake 9 in the place of 10).

d=5-3=2

d=7-5=2

so option A is an ap...

the series in B, C, D option not satisify this criteria...

so option A is correct..