find the sum of an A.P 2,7,12,...to 25 terms
Answers
Answered by
1
Step-by-step explanation:
sum = 25/2 (2×2 + ( 25-1) 5).= 25/2 ( 124) = 25×62= 1550
Answered by
2
Answer:
Given a = 2
d= 5
tn = 25
Find the sum→
Sn
→ n/2 [2a +(n-1)d]
→ 25/2[4+120]
→ 25/2(124)
→25× 62
→1550
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hope it helps uuuu •_•
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