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Grade: 9
        
. If the numbers a, b, c, d , e form an A.P., then the value of a – 4b + 6c – 4d + e is …..
2 years ago

Answers : (1)

Arun
23374 Points
							
Dear Shivani
 

b = a +D

c = a +2D

d = a+3D

e = a+ 4D

where D is the common difference of the AP.

now put these values in the quest.

a - 4(a+D) +6(a+2D) -4(a+3D) + a+ 4D

=  0  ANS.

 

Regards

Arun (askIITians forum expert)

2 years ago
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