# IMO Level 1- Mathematics Olympiad (SOF) Class 10: Questions 683 - 690 of 968

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## Question 683

### Question

MCQ▾

Which of the four is least like the other three?

### Choices

Choice (4)Response

a.

Sun

b.

Pluto

c.

Mercury

d.

Saturn

## Question 684

MCQ▾

If and then

### Choices

Choice (4)Response

a.

2550

b.

7534

c.

4357

d.

5743

## Question 685

### Question

MCQ▾

stands for division, stands for multiplication, stands for subtraction and stands for addition. Which one of the following equations is correct?

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 686

### Question

MCQ▾

Find the missing number.

### Choices

Choice (4)Response

a.

20

b.

26

c.

52

d.

16

## Question 687

### Question

MCQ▾

All the faces of a cube are painted with Orange colour. Then it is cut into 343 small equal cubes. How many small cubes will be formed having no face coloured?

### Choices

Choice (4)Response

a.

168

b.

165

c.

166

d.

167

## Question 688

### Question

MCQ▾

How many 7՚s are there in the following series which are not immediately followed by 3 but immediately preceded by 8?

### Choices

Choice (4)Response

a.

2

b.

4

c.

1

d.

3

## Question 689

### Question

MCQ▾

Samayra was both 13th highest and 13th lowest in a spelling contest. How many people were in the contest?

### Choices

Choice (4)Response

a.

13

b.

25

c.

27

d.

26

## Question 690

### Question

MCQ▾

stands for division, stands for multiplication, stands for subtraction and stands for addition. Which one of the following equations is correct?

### Choices

Choice (4)Response

a.

b.

c.

d.