CTS Company Numerical Ability Permutation and Combination

A bag contains 3 balls of 11 different colors each. Find the min no of chances to find at least 3 balls of same color?

Read Solution (Total 1)

we hav to pich 3 balls of same clr from a bag containing 11 diff coloured balls.

so 1st pick11 balls of 11 diff clrs.

now pick again the 11 diff coloured balls.

now pick 1 ball of any clr.

so the ans is 23
12 years agoHelpfull: Yes(1) No(5)

CTS Other Question

Solid cube of 6 * 6 * 6. This cube is cut into to 216 small cubes. (1 * 1 * 1).the big cube is painted in all its faces. Then how many of cubes are painted at least 2 sides. A work in 12 days b in 15 days. Find the no of days if they work on alternate days.