a=1/2,d=-2find the 63rd term
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Step-by-step explanation:
a=1/2 , d=-2 , n=63
the nth term of an A.P=a+(n-1)d
the 63rd term of an A.P=1/2+(63-1)(-2)
=1/2+(62)(-2)
=1/2-124
=-247/2
=-123.5
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