Mathematics (NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension): Questions 88 - 92 of 218

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 1042 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 450.00 or

Question number: 88

» Mathematics » Percentage

MCQ▾

Question

What should the seller marked the price of a watch purchased at Rs. 380, so that giving 5 % discounts, there is a profit of 25%

Choices

Choice (4) Response

a.

Rs. 450

b.

Rs. 500

c.

Rs. 600

d.

Rs. 400

Question number: 89

» Mathematics » Trigonometry

MCQ▾

Question

If sinx+sin2x=1 , then the value of cos2x+cos4x is

Choices

Choice (4) Response

a.

-1

b.

1

c.

2

d.

-2

Question number: 90

» Mathematics » Mensuration

MCQ▾

Question

The four corners are quadrants of circle and at the center there is a circle. The area of shaded region in the given figure is

A square in which four corners are quadrants of circle

A Square in Which Four Corners Are Quadrants of Circle

Find the area of shaded region

Choices

Choice (4) Response

a.

(182π)cm2

b.

(162π)cm2

c.

(16π)cm2

d.

(82π)cm2

Question number: 91

» Mathematics » Trigonometry

MCQ▾

Question

The angle of elevation of a cloud at a height h above the level of water in a lake is α and the angle of depression of its image in the lake is β . Then, the height of the cloud above the surface of the lake is

Choices

Choice (4) Response

a.

h(cotαcotβ)cotα+cotβ

b.

hsin(αβ)sin(α+β)

c.

h(cotα+cotβ)cotαcotβ

d.

None of the above

Question number: 92

» Mathematics » Trigonometry

MCQ▾

Question

The triangle formed by joining the vertices (3, 2), (5, - 3) and (- 5, 4) will be a

Choices

Choice (4) Response

a.

isosceles triangle

b.

right angled triangle

c.

obtuse triangle

d.

acute triangle

Sign In