Mathematics (NTSE Stage-2 (National-Level) Scholastic-Aptitude & Language Comprehension): Questions 79 - 86 of 112

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Question number: 79

» Mathematics » Trigonometry

MCQ▾

Question

If then value of x in ∆ABC is

Choices

Choice (4) Response

a.

24°

b.

12°

c.

30°

d.

28°

Question number: 80

» Mathematics » Arithmetic

MCQ▾

Question

There are four prime numbers written in ascending order. The product of the first three is 385 and that of the last three is 1001. The last number is

Choices

Choice (4) Response

a.

13

b.

19

c.

11

d.

17

Question number: 81

» Mathematics » Arithmetic

MCQ▾

Question

A horse and two cows together cost Rs. 680. If a horse costs Rs. 80 more than a cow, then the cost of horse is

Choices

Choice (4) Response

a.

Rs. 350

b.

Rs. 300

c.

Rs. 380

d.

Rs. 370

Question number: 82

» Mathematics » Trigonometry

MCQ▾

Question

cos 4x is equal to

Choices

Choice (4) Response

a.

1 + 8sin2x-cos2x

b.

2cos22x

c.

1 + 2sin22x

d.

1 - 8sin2x-cos2x

Question number: 83

» Mathematics » Statistics

MCQ▾

Question

The mean of 78 numbers is 27. If each observation is divided by 3, the new mean is

Choices

Choice (4) Response

a.

9

b.

27

c.

18

d.

None of the above

Question number: 84

» Mathematics » Percentage

MCQ▾

Question

If cost price of 20 articles is equal to selling price of 12 articles, then the profit percentage is

Choices

Choice (4) Response

a.

33.3%

b.

66.7%

c.

28%

d.

50%

Question number: 85

» Mathematics » Trigonometry

MCQ▾

Question

In the figure below, PQ = QS, QR = RS and ∠SRQ = 100°. Find the value of ∠QPS.

Choices

Choice (4) Response

a.

40°

b.

15°

c.

35°

d.

20°

Question number: 86

» Mathematics » Statistics

MCQ▾

Question

If the mean and median of a set of numbers are 8.9 and 9 respectively, then the mode will be

Choices

Choice (4) Response

a.

8.2

b.

9.2

c.

10.2

d.

7.2

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