A positive whole number M less than 100 is repre­sented in base 2 notation, base 3 notation, and base 5 notation. It is found that in all three cases the last digit is 1, while in exactly two out of the three cases the leading digit in 1. Then M equals:

1.  31

2.  63

3.  75

4.  91

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4
Correct Answer :

91


Explanation :
No Explanation available for this question

In a certain examinations paper, there aren questions. For j = 1, 2 ....n. there are 2 students who answered  or more questions wrongly. If the total number of wrong answers is 4095, then the value of n is

1.  12

2.  11

3.  10

4.  9

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4
Correct Answer :

11


Explanation :
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A bag contains 6 red, 4 white and 8 blue balls. If three balls are drawn at random, find the probability that all the three balls are blue.

1.  8/51  

2.  50/51

3.  7/102  

4.  13/51.

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4
Correct Answer :

7/102

 


Explanation :
No Explanation available for this question

If P(A) = 1/3, P(B) = 1/2, P(A ∩ B) = 1/4 the find P(A’ B’)

1.  1/3  

2.  2/5

3.  2/3  

4.  3/4.

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4
Correct Answer :

3/4.


Explanation :
No Explanation available for this question

A and B are two candidates seeking admission to the IIMs. The probability that A is selected is 0,5 and the probability that both A and B are selected is at most 0.3. Is it possible that the probability of B getting selected is 0.9.

1.  No  

2.  Yes

3.  Either (a) or (b)  

4.  Can’t say.

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4
Correct Answer :

No

 


Explanation :
No Explanation available for this question

The probability that a student will pass in Mathematics is 3/5 and the probability that he will pass in English is 1/3. If the probability that he will pass in both Math­ematics and English is 1/8, what is the probability that he will pass in at least one subject

1.  97/120  

2.  87/120

3.  53/120  

4.  120/297.

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4
Correct Answer :

97/120

 


Explanation :
No Explanation available for this question

The odds in favour, of standing first of three students Amit, Vikas and Vivek appearing at an examination are 1:2.2: 5 and 1 :7. respectively. What is the probability that either of them' will stand firs t (assume that a tie for the first place is not possible).

1.  168/178  

2.  122/168

3.  5/168  

4.  125/168.

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4
Correct Answer :

125/168.


Explanation :
No Explanation available for this question

A, B, C are three mutually exclusive arid exhaustive events associated with a random experiment. Find P(A), if it is given that P(B) = 3/2 P(A) and P(Q = 1/2 P(B).

1.  4/13  

2.  2/3

3.  12/13  

4.  1/13.

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4
Correct Answer :

4/13

 


Explanation :
No Explanation available for this question

A and B are two mutually exclusive events of an experi­ment. If P(A') = 0.65, P(A u B) = 0.65 and P(B) =p, find the value of p.

1.  025  

2.  0.3  

3.  0.1  

4.  0.2

View Answer  
4
Correct Answer :

0.3

 


Explanation :
No Explanation available for this question

A bag contains 4 white and 2 black balls. Another contains 3 white arid 5 black balls. If one ball is drawn from each bag, find the probability that both are white.

1.  1/3  

2.  2/3

3.  1/4  

4.  3/4.

View Answer  
4
Correct Answer :

1/4

 


Explanation :
No Explanation available for this question
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