A card is selected at random from a well shuffled deck of 52 cards. The probability of its being a face card is
3/26
3/13
2/13
1/2
(2) 3/13
If the probability of a player winning a game is 0.79, then the probability of his losing the same game is:
1.79
0.31
0.21%
0.21
(4)
Probability of loosing the game
= 1 – Probability of winning the game
= 1 – 0.79 = 0.21
From the data 1, 4, 7, 9, 16, 21, 25, if all the even numbers are removed, then the probability of getting at random a prime number from the remaining is :
2/5
1/5
1/7
2/7
(2)
Given data : 1, 4, 7, 9, 16, 21, 25
After removing even numbers data is: 1, 7, 9, 21, 25
Prime number : 7
Thus, required probability = 1/5
Two dice are rolled simultaneously. What is the probability that 6 will come up at least once?
1/6
7/36
11/36
13/36
(3)
Total possible number of outcomes = 36
Number of outcomes in which 6 will come up at least once = 11
Required probability
Two dice are rolled together. The probability of getting sum of numbers on the two dice as 2, 3 or 5, is:
7/36
11/36
5/36
4/9
(1)
When two dice are tossed together,
Total possible outcomes = 62 = 36
No. of cases getting sum two : {(1, 1)}
No. of cases getting sum three : {(1, 2)(2, 1)}
No. of cases getting sum five : {(1, 4)(4, 1), (2, 3), (3, 2)}
Thus total cases getting sum 2, 3 or 5 = 7
Therefore, required probability = 7/36
All queens, jacks and aces are removed from a pack of 52 playing cards. The remaining cards are well-shuffled and one card is picked up at random from it. The probability of that card to be a king is :
1/10
1/13
3/10
3/13
(1) 1/10
The probability of getting a chocolate flavoured ice cream at random, in a lot of 600 ice creams is 0.055. The number of chocolate flavoured ice creams in the lot is :
33
55
11
44
(1) 33
Two dice are thrown at the same time and the product of the numbers appearing on them is noted. The probability that the product of the numbers lies between 8 and 13 is :
7/36
5/36
2/9
1/4
(1) 7/36
Two dice are rolled together. The probability of getting the sum of the two numbers to be more than 10, is
1/9
1/6
7/12
1/12
(4)
Total number of outcomes = 36
Sum of two numbers to be more than 10 = {(6, 5) (5, 6) (6, 6)}
Required Probability = 3/36 = 1/12
A box contains cards numbered 6 to 55. A card is drawn at random from the box. The probability that the drawn card has a number which is a perfect square, is
7/50
7/55
1/10
5/49
(3)
Given, A box contains card numbered 6 to 55.
Total number of cards = 50
Perfect square number are = 9, 16, 25, 36, 49
Required Probability = 5/50 = 1/10
