Basic Mathematics-Arithmetic (KVPY Stream-SA (Class 11) Math): Questions 17 - 20 of 83

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Question number: 17

» Basic Mathematics » Arithmetic » Clocks

Appeared in Year: 2012

MCQ▾

Question

Observe that, at any instant, the minute and hour hands of a clock make two angles them whose sum is 360? . At 6: 15 the difference between these two angles is.

Choices

Choice (4) Response

a.

175

b.

170

c.

165

d.

180

Question number: 18

» Basic Mathematics » Arithmetic » Ratio and Proportion

Appeared in Year: 2013

MCQ▾

Question

There are three kinds of liquids X, Y, Z. Three jars J1, J2, J3 contain 100 ml of liquids X, Y, Z respectively. By an operation we mean three steps in the following order:

- stir the liquid in J1 and transfer 10 ml from J1 into J2;

- stir the liquid in J2 and transfer 10 ml from J2 into J3;

- stir the liquid in J3 and transfer 10 ml from J3 into J1;

After performing the operation four times, let x, y, z be the amounts of X, Y, Z, respectively, in J1. Then

Choices

Choice (4) Response

a.

Y > X > Z

b.

X > Y > Z

c.

Z > X > Y

d.

X > Z > Y

Question number: 19

» Basic Mathematics » Arithmetic » Number Games

Appeared in Year: 2014

MCQ▾

Question

The number of 6-digit numbers of the form ababab (in base 10) each of which is a product of exactly 6 distinct primes is

Choices

Choice (4) Response

a.

15

b.

10

c.

13

d.

8

Question number: 20

» 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

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