check whether - 25 is a term of the progressions 5, 3, 11....
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let an =-25
d=-2
a= 5
an = a +(n-1)d
-25= 5 + (n-1)-3
-30 = -3(n-1)
n-1= 10
n= 11
Therefore,yes -25 is a term of the given AP.
d=-2
a= 5
an = a +(n-1)d
-25= 5 + (n-1)-3
-30 = -3(n-1)
n-1= 10
n= 11
Therefore,yes -25 is a term of the given AP.
salehas372003:
Once you wrote d=-2 and in another step u wrote -3 in place of d
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4
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