Question
Mathematics Question on binomial expansion formula
The coefficient of x7 in (1-x-x2+x3)6
A
132
B
144
C
-132
D
-144
Answer
-144
Explanation
Solution
The correct answer is option (D): -144
The coefficient of x7 in (1-x-x2+x3)6
132
144
-132
-144
-144
The correct answer is option (D): -144