# IMO- Mathematics Olympiad Class 6: Questions 664 - 670 of 1049

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## Question number: 664

MCQ▾

### Question

Perimeter of a square is the sum of the lengths of all the ________ sides.

### Choices

Choice (4) Response

a.

6

b.

4

c.

3

d.

2

## Question number: 665

MCQ▾

### Question

A bus travels 126 km in 3 hours and a train travels 315 km in 5 hours. The ratio of their speeds is

### Choices

Choice (4) Response

a.

1: 3

b.

3: 5

c.

2: 3

d.

126: 315

## Question number: 666

MCQ▾

### Question

In a quiz program, the ratio of correct answers to incorrect answers is 5: 2. If 16 incorrect answers are given, then the number of correct answers given is

### Choices

Choice (4) Response

a.

40

b.

20

c.

30

d.

80

## Question number: 667

MCQ▾

### Question

If 12 men can do a piece of work in 18 days, in how many days will 8 men complete it?

### Choices

Choice (4) Response

a.

10 days

b.

27 days

c.

days

d.

12 days

## Question number: 668

MCQ▾

### Question

How many envelopes can be made out of a sheet of paper 324 cm by 172 cm, if each envelope requires a piece of paper of size 18 cm by 12 cm?

### Choices

Choice (4) Response

a.

528

b.

285

c.

582

d.

258

## Question number: 669

MCQ▾

### Question

A perpendicular is drawn to a line segment at N using protractor and point P is marked on perpendicular, then

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 670

MCQ▾

### Question

Which square must be shaded so that the figure has a line of symmetry?

### Choices

Choice (4) Response

a.

Q

b.

S

c.

R

d.

P

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