IBM Company Numerical Ability Probability

Three people each toss a penny at the same time. What is the probability that two people get the same side of the penny and the other person gets the opposite side?

Read Solution (Total 3)

possible outcomes are
{(hhh),(hht),(hth),(thh),(ttt),(tth),(tht),(htt)}
so according to situation there are 6 required outcomes
so 6/8= 3/4.
12 years agoHelpfull: Yes(32) No(0)

6 possble to get same phase = 6/8 = 3/4
12 years agoHelpfull: Yes(7) No(3)
if 3 coins tossed definitely two must be same or three must be same
so probability of getting all 3 as same is 1/8
probability to get 2 as same is 1-1/8=7/8
13 years agoHelpfull: Yes(2) No(23)

IBM Other Question

A jar contains 2 red, 3 blue, and 4 green marbles. Niki draws one marble from the jar, and then Tom draws a marble. What is the probability that Niki will draw a green marble and Tom will draw a blue marble? There are 9 popsicles: 3 orange, 3 cherry, 3 grape. There are 4 children. What is the probability that all 4 children will get the flavor of their choice?