Aptitude - Arithmetical Ability

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31.

Three unbiased coins are tossed.What is the probability of getting at least 2 heads?                         
A. 1/2 B. 1/4
C. 1/3 D. 1/8



32.

Two dice are thrown together. What is the probability that the sum of the numbers on the two faces is divisible by 4 or 6?                         
A. 5/18 B. 7/18
C. 9/18 D. 12/18



33.

A card is drawn from a pack of 52 cards. The probability of getting a queen of club or a king of heart is:                         
A. 1/13 B. 2/13
C. 1/26 D. 1/52




34.

An unbiased die is tossed. Find the probability of getting a multiple of 3                         
A. 1/2 B. 1/4
C. 1/3 D. 2/5



35.

A bag contains 4 white, 5 red and 6 blue balls. Three balls are drawn at random from the bag. The probability that all of them are red, is:                         
A. 1/22 B. 3/22
C. 2/91 D. 2/77



36.

A box contains 20 electric bulbs, out of which 4 are defective. Two bulbs are chosen at random from this box. The probability that at least one of these is defective is                         
A. 4/19 B. 7/19
C. 12/19 D. 21/95



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