Question

a+1,3a,4a+2 first three term ap and find a and 10th term​

Answer 1

if p,q,r in ap then 2q=p+r

so, 2.3a=a+1+4a+2

6a=5a+3

a=3,

first term=a+1=4,

sec term=3a=9

common diff d=9-4=5

10th term = a+(10-1)d=3+9.5=48