Q21 of 118 Page 17

Mark the correct alternative in the following:

If , then the value of r is


r – 6 + 3r + 1 = 43 ( nCx = nCy ⇒ n = x + y or x = y )


4r – 5 = 43


4r = 48


r = 12

More from this chapter

All 118 →
19

Mark the correct alternative in the following:

Given 11 points, of which 5 lie on one circle, other than these 5, no 4 lie on one circle. Then the number of circles that can be drawn so that each contains at least 3 of the given point is


 20

Mark the correct alternative in the following:

How many different committees of 5 can be formed from 6 men and 4 women on which exact 3 men and 2 women serve?


 22

Mark the correct alternative in the following:

The number of diagonals that can be drawn by joining the vertices of an octagon is


 23

Mark the correct alternative in the following:

The value of is