Find the sum of 18 terms of the series 11,22,
33 ...........
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AP = 11,22,33,....
a=11, d=11, n=18
a18= a+(18-1)d
= a+17d
= 11 + 17(11)
= 11 + 187
= 198.
Hope it helps!! Please mark aa brainliest if it helps!! :-)
a=11, d=11, n=18
a18= a+(18-1)d
= a+17d
= 11 + 17(11)
= 11 + 187
= 198.
Hope it helps!! Please mark aa brainliest if it helps!! :-)
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