Aptitude Tests 4 Me

Basic Numeracy/Quantitative Aptitude

438. The probability of having a girl is identical to the probability of having a boy. In a family with three children, what is the probability that all the children are of the same gender?

 (a) 1/8 (b) 1/6 (c) 1/3 (d) 1/4

439. A buyer buys 3 different items out of the newly introduced 10 different items. If two items were to be selected at random, what is the probability that the buyer does not have both the chosen items?

 (a) 1/15 (b) 3/15 (c) 7/15 (d) 9/16

440. A community of 3 people is to be selected from 5 married couples, such that the community does not include two people who are married to each other. How many such communities are possible?

 (a) 40 (b) 60 (c) 70 (d) 80

441. There are three secretaries who work for four departments. If each of the four departments has one report to be typed out, and the reports are randomly assigned to a secretary, what is the probability that all three secretaries are assigned at least one report?

 (a) 5/9 (b) 2/3 (c) 7/9 (d) 8/9

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Detailed Solution

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