If the first term of an AP is 5 and the common difference is 2, then the sum of the first six terms is? (No spamming!)
Answers
Answered by
6
Answer:
hope this helps!
formula used :
S = n/2( 2a + (n - 1 ) d)
is used to solve the sum of numbers
Attachments:
Answered by
1
Answer:
a=5
cd=2
n=6
Sn=?
Sn=n/2(2a+(n-1)d)
=6/2(2×5+(6-1)2)
=3(10+(5)2)
=3(10+10)
=3(20)
=60
Step-by-step explanation:
=
Similar questions