Question
A box contains 10 red balls, 12 green balls, and 8 blue
balls. Two balls are drawn at random. What is the probability that both balls drawn are either red or green?Solution
Total balls = 10 + 12 + 8 = 30. P(both red or green) = P(both red) + P(both green). P(both red) = (10/30) * (9/29) = 90/870. P(both green) = (12/30) * (11/29) = 132/870. P(both red or green) = 90/870 + 132/870 = 222/870 = 37/145. Correct Option: d
Arrange the given words as in a dictionary and tick the one that come Third.
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1. Sou...
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‘ PREPOSITION ’
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1- Hyena<...
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1. Gemlike
2. Geminate
3. Gemmier
4. Geminal
5. Gemini
Arrange the following words in the order in which they appear in an English dictionary.
1. Rightly
2. Rigidly
3. Righteous
4. Rigour
5. Rights
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