Mathematics (NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension): Questions 53 - 58 of 218

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Question number: 53

» Mathematics » Percentage

MCQ▾

Question

A man buys 4 tables and 5 chairs for Rs. 1000. If he sells the tables at 10 % profit and chairs 20 % profit, he earns a profit of Rs. 120. What is the cost of one table?

Choices

Choice (4) Response

a.

Rs. 220

b.

Rs. 200

c.

Rs. 240

d.

Rs. 260

Question number: 54

» 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.

0.5

b.

0.66

c.

0.75

d.

0.25

Question number: 55

» Mathematics » Trigonometry

MCQ▾

Question

From the top of a pillar of height 20 m the angles of elevation and depression of the top and bottom of another pillar are 30° and 45°, respectively. The height of the second pillar (in m) is

Choices

Choice (4) Response

a.

20

3

b.

203

c.

203(31)

d.

203(3+1)

Question number: 56

» Mathematics » Statistics

MCQ▾

Question

If the geometric mean of three observations 40, 50 and x is 10, then the value of x is

Choices

Choice (4) Response

a.

4

b.

2

c.

0.5

d.

6

Question number: 57

» Mathematics » Rational Numbers

MCQ▾

Question

If x and y denote respectively, the area and the sum of the length of diagonals of a rectangle with length 1 unit and breadth 12 unit, then which one of the following is correct?

Choices

Choice (4) Response

a.

x is irrational and y is rational

b.

x and y are both irrational

c.

x is rational and y is irrational

d.

x and y are rational

Question number: 58

» Mathematics » Percentage

MCQ▾

Question

3 L of water is added to 5 L of a 20 % solution of alcohol in the water. The strength of the alcohol is now

Choices

Choice (4) Response

a.

27.5%

b.

12.5%

c.

20%

d.

28.5%

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