Find the sum of the following aps 2,7,12-----to10 terms
Answers
Answered by
1
Answer:
sn = formula
Step-by-step explanation:
firstly get n and then by formals of sn get the sum
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Answered by
1
the answer is 245
Step-by-step explanation:
a=2 ,d=5 n=10
sn = n/2(2a+(n-1)d)
S10=10/2(4+(10-1)5)
S10=5(4+45)
S10=5(49)
S10=245
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