Find the sum the first 30 positive INTEGERS DIVISIBLE by 6
Answers
Answered by
10
Answer:
hope it helps you see the attachment for further information
Attachments:
Answered by
21
Answer:
30 positive integers divisible by 6 are :
A.P. = 6,12,18,24.......
a=6 n=30 d=12-6=6
Now , putting the values in the formula
Sn= n/2 [2a+(n-1)d]
S30= 30/2 [2x6+(30-1)6]
=15[12+29(6)]
=15[12+174] =15[186] = 2790
Similar questions