Mathematics
The king and queen of diamonds are removed from a pack of well-shuffled cards. One card is selected at random from the remaining cards. The probability of getting the king of clubs is: 1. 2. 3. 4.
Related Questions
A bag contains 5 red balls and some blue balls. If the probability of drawing a blue ball from the bag is thrice that of a red ball, the number of blue balls in the bag is:
10
15
20
25
The probability of getting a defective pen in a lot of 600 is 0.045. The number of defective pens in the lot is :
27
270
36
360