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find the sum of the series 4 , -3 , -10 to 23 terms
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First find the values of all the terms by finding the pattern.
Then add them all up.
But how can i do
^ @confluxepic No way. It is an arithmetic progression. a = 4 d = -7 n = 23 S = n/2 * (2a + (n-1)d)
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Oh. @AkashdeepDeb
It is 264.5
Right or wrong
23/2*(2*4+(23-1)-7)
I think it must be a negative number.
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