Question

PLEASEE HELP!!!!
If a1 = 10 and an = an - 1 + 1 then find the value of a4

Answer 1

Answer: 13

Explanation:

an=a(n-1)+1

a1=10

a2=

a(2-1)+1=

a1+1=

10+1=11

a3=

a2+1=

11+1=12

a4=

a3+1=

12+1=13

a4=13