find the sum of first 25 terms of the AP 2, 7, 12
Answers
Answered by
3
Answer:
1550
Step-by-step explanation:
Sn = (n/2)[2a + (n-1)d]
= (25/2)[2*2+(24)*5]
= 25*62 = 1550
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Answered by
1
Answer:
1550
Step-by-step explanation:
Sn = (n/2)[2a + (n-1)d]
= (25/2)[2*2+(24)*5]
= 25*62 = 1550
Step-by-step explanation:
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