Question
Two cards are drawn at random from a standard deck of 52
cards. What is the probability of drawing at least one queen?Solution
Case 1: There is 1 queen
Required probability = (4C1 × 48C1)/52C2 = 32/221
Case 2: There are 2 queens
Required probability = 4C2/52C2 = 1/221
Therefore, desired probability = (32/221) + (1/221) = 33/221
Who sits diagonally opposite to T?
Who among the following faces M?
Five people F, G, H, I and J are standing in a straight row facing towards the north direction. Two people are standing between F and J.J is not standin...
Four of the following five are alike in the certain way based on their seating positions and so form a group. Which is the one that does not belong to t...
Which of the following is not correct regarding F?
At a party five Girls are sitting in a row. Priya is to the left of Manu and to right of Onam. Ritu is sitting to the right of Neha, but to left of Onam...
How many persons are not facing south?
What is the position of Palak with respect of Punish?
How many persons sitting between D and C?
Four friends O, P, Q and R are sitting in a row facing south. P and Q are sitting at an extreme end of the row. O is sitting between P and R and sits ...
