TCS Company Numerical Ability Probability

There are 11 boys in a family. youngest child is a boy.what is the probability that all are boys?

Read Solution (Total 4)

1(b'coz all are boys)
14 years agoHelpfull: Yes(27) No(9)

(1/2)^10
14 years agoHelpfull: Yes(8) No(5)
probability of remaning 10 children are boys is=(1/2^10)
14 years agoHelpfull: Yes(8) No(8)
(1/2)^10
14 years agoHelpfull: Yes(4) No(7)

TCS Other Question

There is a doll that can make 2 musical sounds. it makes 2 musical sounds after being defective. what is the probability that the same musical sound would be produced 5 times consecutively? A boy bought a roll A of 56 inches wide and 141 yards long. he also bought B of 77 inches wide of length 333 years. time taken for cutting A into 1 yard piece is 2 seconds.time taken to cut into 141 pieces of 1 yard each is how much?