Question
Mon February 06, 2012 By:

if the numbers a,b,c,d,d form an a.p, then the value of a-4b+6c-4d+e is wat?

Expert Reply
Mon February 06, 2012
Let D be the common difference of the AP. Then, b = a +D c = a +2D d = a+3D e = a+ 4D Now, a-4b+6c-4d+e = a - 4(a+D) +6(a+2D) -4(a+3D) + (a+ 4D) = 0
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