Find the sum of first 22 terms of ap in which d=7 and 22 term is 140
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Answered by
3
Answer:
1617
Step-by-step explanation:
For the AP,
d=7
l=140
Tn=n/2[a+l}
T22=22/2[7+140]
T22=11[147]
T22=1617
Hence,the sum of first 22 terms of the AP is 1617.
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