Question
A bag contains 3 black balls, 12 blue balls, and 3
yellow balls. Two balls are drawn at random. Find the probability that the two balls are blue.Solution
Number of ways of selecting two blue balls = 12 Câ‚‚
Total number of balls = 3 + 12 + 3 = 18
Number of ways of selecting two balls = 18 Câ‚‚
Probability = 12 C₂ ÷ 18 C₂ = (12 × 11) ÷ (18 × 17) = 132 ÷ 306 = 22/51
Four letter-clusters have been given, out of which three are alike in some manner and one is different. Select the letter-cluster that is different.
Three of the following four letter-clusters are alike in a certain way and one is different. Pick the odd one out.
In the following question, select the odd letters from the given alternatives.
Select the odd letters from the given alternatives?
Three of the following four letter-clusters are alike in a certain manner and one is different. Select the odd letter-cluster.
In the following question, select the odd pair in the given alternatives.
Find the odd one out.
1) Brick 2) Heart 3) Club 4) Spade
Select the letter cluster which does not belong to the same group from the given alternatives.
Four letter-clusters are given out of which three are alike in some manner and one is different. Select the odd-one out.
Four letter-clusters have been given, out of which three are alike in some manner and one is different. Select the odd letter-cluster.
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