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50,46,42...........to 10 terms. |
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Answer» Step-by-step explanation: A=50 n=10 D= 46-50= -4 L= a+(n-1)d L=50+(10-1)(-4) L=50+9×-4 L =50-36 L=14 Now, Sn=n/2(a+l)
Sn=10/2(50+14) Sn=5(64) Sn=320. |
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