Find the sum of all 2 digit numbers divisible by 3.
Answers
Answered by
0
Answer:
12,15,18,21,27,30,33,36,39 .........etc
Answered by
1
Answer:
Step-by-step explanation:
a1=12 l=99 d=3
99=a1 +(n-1)d
n=30
Sn=n/2(a1+l)
=30/2(12+99)
=1665
Similar questions