Probability - Aptitude Questions and Answers Part 4

16.  I roll two dices at the same time. What is the probability that the sum of numbers on top faces will be more than 8?

a.5
36
b.1
4
c.5
18
d.5
6

Answer: c.5
18


17. I select three numbers randomly from 1 to 10. What is the probability that their product is an odd number?

a.1
12
b.1
2
c.3
4
d.11
12

Answer: b.1
2


18. I have 4 coins in my hand to toss. What is the probability of getting odd number of tails in a toss?

a.3
16
b.5
16
c.1
2
d.3
4

Answer: c.1
2


19. I have a well shuffled deck of cards from which I'm required to draw two cards one after the other without any replacement. What is the probability that both the cards are same colour face cards?

a.4
221
b.5
221
c.10
441
d.10
221

Answer: b.5
221


20. If I use all the letters of the word 'KANPUR' and re-arrange them to form new words. As per the dictionary arrangement, how many words will appear before "KANPUR"?

a. 120
b. 147
c. 123
d. 144

Answer: a. 120

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