Wipro
Company
Numerical Ability
Probability
In how many different ways can a group of 4 boys and 2 girls be made out of a total of 8 boys and 4 girls?
a 240 b) 360 c) 280 d)420
Read Solution (Total 0)
Wipro Other Question
In a toy shop there are seven different varieties of toys. The shopkeeper wants to make a selection of different toys of 3 different varieties?
a) 28 b) 35 c) 56 d) none of these.
A typist was appointed in Correct technology services and she was asked to prepare 23 letters addressed to different people and prepare 23 covers addressed to them. She inserts these letters at random into the envelopes. (one letter per envelope). What is the probability that exactly one letter is inserted to the wrong envelope?
a)7/23 b)9/23 c)0 d)11/23