2. The sum of first ten terms of an AP 125, 135,
145..........
.......is
Answers
Answered by
1
Step-by-step explanation:
s = 10/2 (2×125 + (10-1)×10
=5(250 + 90)
= 5(340)
= 1700
Answered by
1
Answer:
in AP
Step-by-step explanation:
sn=n/2[2a+(n-1)d]
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