Mathematics-Probability (NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension): Questions 7 - 12 of 13

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Question number: 7

» Mathematics » Probability

MCQ▾

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

Question number: 8

» Mathematics » Probability

MCQ▾

Question

In a single throw of a dice, what is the probability of getting a number greater than 4?

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 9

» Mathematics » Probability

MCQ▾

Question

If a carton containing a dozen mirrors is dropped which of the following cannot be the ratio of the broken mirror to unbroken mirror?

Choices

Choice (4) Response

a.

1: 1

b.

3: 2

c.

1: 2

d.

5: 1

Question number: 10

» Mathematics » Probability

MCQ▾

Question

From 1 to 100 numbers, 3 numbers are selected at random, what is the probability that the numbers selected will have an odd sum?

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 11

» Mathematics » Probability

MCQ▾

Question

A coin is tossed 5 times. What is the probability of getting number of heads more than the number of tails?

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 12

» Mathematics » Probability

MCQ▾

Question

What is the probability of getting at least one head when two coins are tossed simultaneously?

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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