find the sum of first 23 terms of an AP 7,10,21/2, 14...
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a+22d
7+22×3
7+66
=73 this si the answer
7+22×3
7+66
=73 this si the answer
sheetal44:
plzz prove that this is true or not
this is true i am sure
i can't understand this plzzz write easy method
okk
first of all
when find 22term then we apply a+21d because one no. is less and d means difference second number- first number
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