KVPY Stream-SA (Class 11) Math: Questions 94 - 98 of 265

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Question number: 94

» Basic Mathematics » Arithmetic » Rates

MCQ▾

Question

I carried 100 kg of metal bucket of water in summer by train. In the beginning, the water content was 80%. By the time I reached the destination, the water content had dropped to 75%. The reduction in the weight of the bucket with water was

Choices

Choice (4) Response

a.

15 kg

b.

20 kg

c.

25 kg

d.

30 kg

Question number: 95

» Sets, Relations and Functions » Functions and Composition

Appeared in Year: 2014

MCQ▾

Question

Let R be the set of all real numbers and let f be a function from R to R such that

Equation

for all x ∈ R. Then Equation is equal to

Choices

Choice (4) Response

a.

2

b.

-4

c.

-2

d.

0

Question number: 96

» Basic Mathematics » Arithmetic » Rates

Appeared in Year: 2012

MCQ▾

Question

A train leaves Pune at 7: 30 am and reaches Mumbai at 11: 30 am. Another train leaves Mumbai at 9: 30 am and reaches Pune at 1: 00 pm. Assuming that the two trains travel at constant speeds, at what time do the two trains cross each other?

Choices

Choice (4) Response

a.

11: 30 am

b.

10: 26 am

c.

data not sufficient

d.

10: 20 am

Question number: 97

» Complex Numbers and Quadratic Equations » Quadratic Equations in Real and Complex Number System

Appeared in Year: 2012

MCQ▾

Question

The square-root of Equation is

Choices

Choice (4) Response

a.

3

b.

4

c.

2

d.

1

Question number: 98

» Basic Mathematics » Arithmetic » Ratio and Proportion

Appeared in Year: 2014

MCQ▾

Question

In a cinema hall, the charge per person is Rs. 200. On the first day, only 60 % of the seats were filled. The owner decided to reduce the price by 20 % and there was an increase of 50 % in the number of spectators on the next day. The percentage increase in the revenue on the second day was

Choices

Choice (4) Response

a.

20

b.

50

c.

30

d.

40

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