MathematicsProbability (NTSE Stage1 (StateLevel) ScholasticAptitude & Language Comprehension): Questions 1  7 of 13
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Question number: 1
» Mathematics » Probability
Question
The mid value of a class interval is 42. If the class size is 10, then the upper and lower limits of the class are
Choices
Choice (4)  Response  

a.  47.5 and 37.5 

b.  47 and 37 

c.  37.5 and 47.5 

d.  37 and 47 

Question number: 2
» Mathematics » Probability
Question
Two coins are tossed simultaneously. The probability of getting one head is
Choices
Choice (4)  Response  

a.  1/4 

b.  1/2 

c.  1/3 

d.  3/4 

Question number: 3
» Mathematics » Probability
Question
What is the probability of getting at least one head when two coins are tossed simultaneously?
Choices
Choice (4)  Response  

a.  0.5 

b.  0.66 

c.  0.75 

d.  0.25 

Question number: 4
» Mathematics » Probability
Question
Mohan lies on 3 days out of the 7 days in a week, whereas Ram lies on 4 days out of 6 days of a week. If both of them were asked a question, what is the probability that both gave a true reply?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 5
» Mathematics » Probability
Question
When two dice are rolled together, the probability of getting an even number on one dice and a multiple of 3 on the other, is
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 6
» Mathematics » Probability
Question
An unbiased dice is rolled twice, what is the probability of not getting a 2 in any one of the two rolls?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 7
» Mathematics » Probability
Question
A bag contains 20 balls out of which x are black. If 10 more black balls are put in the box, the probability of drawing a black ball is double of what it was before. The value of x is
Choices
Choice (4)  Response  

a.  40 

b.  10 

c.  5 

d.  0 
