wiz-icon
MyQuestionIcon
MyQuestionIcon
2
You visited us 2 times! Enjoying our articles? Unlock Full Access!
Question

The value of 30C030C10 - 30C130C11 + 30C230C12 - .......... + 30C2030C30 is


A

60C30

No worries! We‘ve got your back. Try BYJU‘S free classes today!
B

40C30

No worries! We‘ve got your back. Try BYJU‘S free classes today!
C

60C20

No worries! We‘ve got your back. Try BYJU‘S free classes today!
D

30C10

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution

The correct option is D

30C10


Difference of suffices is same = 10 and terms are alternately positive and negative

we take expansion of (1x)30and(x+1)30 ,

multiply and equate cofficient of x20 on both sides.

(1x)30(x+1)30=(1x2)30

coff of x20=30C10


flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Area under the Curve
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
CrossIcon