given. a=4 d=2 Sn=-4 find n and a
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Answer:
it is expplained
Step-by-step explanation:
An=a+(n-1)d
An=4+(n-1)2
An=4+2n-2
2n=4+2
2n=6
n=6/2
n=3
.... the value of a is already in the question a=4
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