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QUESTION
Q
A bag contains 13 white and 7 black balls. Two balls are drawn at random what is the probability that they are of same...

Solution

Total possible outcomes = 20C2  Total favourable outcomes are drawing two white balls or drawing two black ball...

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Study the passage carefully and answer the following questions. Global warming is a very serious issue that is concerning every rational being on earth. Changes in rainfall and plant distribution as a result of global warming affect the migratory routes, feeding behaviour and mating habits of many birds. The rise in temperature might also lead to a change in ocean currents which might change their direction….

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‘Crygenic Engines’ are being developed indigenously by an Indian organization. These engines are normally used for which of the…

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When X is subtracted from the numbers 9, 15 and 27, the remainders are in continued proportion. What is the value of X ?

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