10 th term of 4+6+8++....... is
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Answered by
2
Explanation:
22
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Answered by
7
answer:
let S=4+6+8....
the above series is arthematic progression common difference of 2
we know ,a-n=a1+(n-1)d
therefore a10=4+(10-1)(2)
=4+9(2)
=18+4
=22
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