find the sum of indicated numbers of terms of the following 1) 0,-7,-14,.......45terms
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here,
Sn = n/2{2a+(n-1)d}
= 45/2{44×(-7)
= 22.5×(-308)
= -6930
Sn = n/2{2a+(n-1)d}
= 45/2{44×(-7)
= 22.5×(-308)
= -6930
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See the attachment ⬆️⬆️⬆️⬆️
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