Question
A bag contains 4 red and 3 blue balls. Two balls are
drawn at random without replacement. Find the probability that both balls are of the same colour.Solution
Total balls = 4 + 3 = 7 Total ways to choose 2 = 7C2 = 21 Favourable cases: Both red: 4C2 = 6 Both blue: 3C2 = 3 Total favourable = 6 + 3 = 9 Probability = 9 / 21 = 3 / 7 Answer: 3/7.
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How many person sits right of G?
Six persons J, K, L, M, N, and O are sitting in a straight row facing north direction but not necessarily in the same order. Two persons sit between L a...
Which of the following statement is true?
How many persons are sitting around the circular table?
How many persons are seated between P and Q?
Four of the following are alike in a certain way. Which of the following one does not belong to the group?
If G is related to B and H is related to C. In the same way, who is related to J?
Answer the following questions based on the information given below.
If A@B means A is the son of B.
A#B means A is the father of B.
...How many persons sit between T and V when counted from the right of V?
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