2. Find the sum of first 10 terms of the AP 2, 7. 12,
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Answer:
s10=254
Step-by-step explanation:
a=2 d=7.12-2=5.12
s10=10/2[2(2)+(10-1)5.12]
= 5[4+46.08]
=5(50.8)
s10 =254
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