wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Sum of the coefficients in the expansion of (5x−4y)n where n is a positive integer is

A
1
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
9n
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
(1)n
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
5n
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A 1
Substituting x=1 and y=1 in the above expression we get the sum of the binomial coefficients as
(5x4y)n
=(54)n (substituting x=1 and y=1)
=(1)n
=1
Hence, answer is A.

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Definition of Function
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
CrossIcon