Calculate the sum: (-125) + 125 + (-125) + ...
(i) if the number of terms is 30
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Calculate the sum: (-125) + 125 + (-125) + ...
(i) if the number of terms is 30
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Answer:
here 0(zero) is answer
Step-by-step explanation:
As one is of + sign and another of - sign so all cancelled and zero remains as answer
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Answer:
–235
Step-by-step explanation:
n/2{2a+(n–1)d}
30/2{2(-125)+(30–1)0}
30/2{–250+0}
15–250=–235