find the sum of the following A.P2,7,12 to 10 tems
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Answered by
2
Answer:
245
Step-by-step explanation:
Answered by
3
Answer:
245
Step-by-step explanation:
2,7,12,......upto 10 terms
here a=2
d=7-2=12-7=5
Sum of 10 terms=n/2(2a+(n-1)d)=n=10
=10/2(4+9×5)
=5(4+45)
=5×49
=245...
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