add this terms -7/10, 5/(-7), 4/(-5)
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Step-by-step explanation:
How many terms of A.P 7,11,15,19,23..... will add up to 900? HARD. Answer. Sum of AP=(2n )[2a+(n−1)d]. 900=(2n)[2∗7+(n−1)4].
Answered by
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Step-by-step explanation:
\sum\limits_{i=1}^n x_i = x_1 + x_2 + \dots + x_n
i = index of summation
n = upper limit of summation
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