IMO- Mathematics Olympiad (SOF) Class 6: Questions 213 - 220 of 1049

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Question number: 213

» Playing With Numbers

MCQ▾

Question

When a number is divided by eight, it has a remainder of 2. When it is divided by nine, it has remainder of 1. What is the number?

Choices

Choice (4) Response

a.

34

b.

10

c.

15

d.

12

Question number: 214

» Playing With Numbers

MCQ▾

Question

What least value should be given to * so that the number 653 * 47 is divisible by 11?

Choices

Choice (4) Response

a.

9

b.

6

c.

7

d.

1

Question number: 215

» Playing With Numbers

MCQ▾

Question

The numbers which have more than two factors are called ________.

Choices

Choice (4) Response

a.

Prime & Composite

b.

Prime

c.

Composite

d.

Question does not provide sufficient data or is vague

Question number: 216

» Playing With Numbers

MCQ▾

Question

The LCM of two numbers is 198. If one number is 396 and another is 66, then the HCF is

Choices

Choice (4) Response

a.

231

b.

132

c.

144

d.

154

Question number: 217

» Number Systems

MCQ▾

Question

The integer which is 7 more than is

Choices

Choice (4) Response

a.

4

b.

- 10

c.

16

d.

- 4

Question number: 218

» Number Systems

MCQ▾

Question

There are 216 black balls in a basket. A boy takes out 8 black balls from it and replaces them by 16 white balls. He continues to do so, till all black balls are replaced by white balls. Find the number of white balls put in the basket?

Choices

Choice (4) Response

a.

485

b.

654

c.

432

d.

462

Question number: 219

» Playing With Numbers

MCQ▾

Question

Number of prime and co-prime numbers from 30 to 90 are

Choices

Choice (4) Response

a.

14

b.

13

c.

15

d.

19

Question number: 220

» Playing With Numbers

MCQ▾

Question

Two tankers contain 850 liters and 680 liters of kerosene oil respectively, then the maximum capacity of a container which can measure the kerosene out of both the tankers when used an exact number of times is ________.

Choices

Choice (4) Response

a.

85 liters

b.

10 liters

c.

170 liters

d.

34 liters

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