Find
first twenty terms of arithmetic series ,2+7+12+......... using suitable formula
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0
Answer:
The answer is 97×15
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Answered by
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Answer:
Step-by-step explanation:
(Given)
a=2,t¹=2,t²=7,t³=12....
2,7,12....
Here d (common difference)
We get d by,
t²-t¹=7-2=5
t³-t²=12-7=5
So here d= 5 .
To get the next term in AP we should add the common difference and the prior term.
t⁴=t³+d=12+5=17
t⁵=t⁴+d=17+5=22
t⁶=t⁵+d=22+5=27
.....
In the AP the first twenty terms will be as follows.
2,7,12,17,22,27,32,37,42,47,52,57,
62,67,72,77,82,87,92,97.
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