Mathematics-Probability [NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension]: Questions 1 - 7 of 13
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Question 1
Question MCQ▾
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 and 37 | |
b. | 47.5 and 37.5 | |
c. | 37 and 47 | |
d. | 37.5 and 47.5 |
Question 2
Question MCQ▾
Two coins are tossed simultaneously. The probability of getting one head is
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |
Question 3
Question MCQ▾
What is the probability of getting at least one head when two coins are tossed simultaneously?
Choices
Choice (4) | Response | |
---|---|---|
a. | 0.66 | |
b. | 0.25 | |
c. | 0.5 | |
d. | 0.75 |
Question 4
Question MCQ▾
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 | |
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a. | ||
b. | ||
c. | ||
d. |
Question 5
Question MCQ▾
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 | |
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a. | ||
b. | ||
c. | ||
d. |
Question 6
Question MCQ▾
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 | |
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a. | ||
b. | ||
c. | ||
d. |
Question 7
Question MCQ▾
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. | 0 | |
d. | 5 |