KVPY Stream-SA (Class 11) Math: Questions 186 - 191 of 265

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Question number: 186

» Basic Mathematics » Arithmetic » Rates, Speeds and Unitary Method

MCQ▾

Question

Two workers A and B are engaged to do a piece of work. Working alone, A takes 12 hours more to complete the work than if both worked together. On the other hand, working alone, B would need 3 hours more to complete the work than if both worked together. How much time would they take to complete the job working together?

Choices

Choice (4) Response

a.

92hr

b.

9 hr

c.

8 hr

d.

6 hr

Question number: 187

» Basic Mathematics » Arithmetic » Ratio and Proportion

MCQ▾

Question

I carried 500 kg of watermelon in summer by train. In the beginning, the water content was 95%. By the time I reached the destination, the water content had dropped to 92%. The reduction in the weight of the watermelon was-

Choices

Choice (4) Response

a.

312.5

b.

150.5

c.

163

d.

187.5

Question number: 188

» Basic Mathematics » Arithmetic » Simplifying Expressions

MCQ▾

Question

If x is real, the value of x26x+14 will not be less than,

Choices

Choice (4) Response

a.

5

b.

8

c.

7

d.

6

Question number: 189

» Basic Mathematics » Geometry » Circle and Properties

MCQ▾

Question

The lengths of two parallel chords of a circle are 8 cm and 6 cm. If the smaller chord is at distance 4 cm from the centre, then the distance of the other chord from the centre is –

Choices

Choice (4) Response

a.

3

b.

5

c.

4

d.

2

Question number: 190

» Sets, Relations and Functions » Functions and Composition

MCQ▾

Question

If (x)=log2x2+x ; than value of f(4x2+x22) is –

Choices

Choice (4) Response

a.

f(x1)

b.

2f(x)

c.

f(x)

d.

f(x2)

Question number: 191

» Basic Mathematics » Algebra » Simplifying Expressions

MCQ▾

Question

For which, statement: “ f(x)=x2x+41 is prime” is not true?

Choices

Choice (4) Response

a.

f(2)

b.

f(4)

c.

f(5)

d.

f(3)

f Page
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