1
2
3
6
Correct answer is C
8Px8Cx=8!(8−x)!÷8!(8−x)!x!=6
8!(8−x)!×(8−x)!x!8!=x!=6
x=3
If the binomial expansion of (1 + 3x)6 is used to evaluate (0.97)6, find the value of x.&n...
A curve is given by y=5−x−2x2. Find the equation of its line of symmetry....
The 3rd and 6th terms of a geometric progression (G.P.) are 83 and 6481 re...
Using the binomial expansion (1+x)6=1+6x+15x2+20x3+15x4+6x5+x6, ...
Find the radius of the circle 2x2 - 4x + 2y2 - 6y -2 = 0. ...
If n items are arranged two at a time, the number obtained is 20. Find the value of n. ...
An exponential sequence (G.P.) is given by 8√2, 16√2, 32√2, ... . Find the n\(^{th...