13. Find the sum of the following AP: 2, 7, 12... to 10 terms
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Answer:
245
Step-by-step explanation:
a = 2
d = 7 - 2 = 5
an = a + (n-1)d
a10 = 2 + (10 -1)(5)
= 2 + (9)(5)
= 2 + 45
= 47
Sn =
sum of the AP 2, 7, 12...... to 10 terms = 245
Hope you get your answer
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