# IMO Level 1- Mathematics Olympiad (SOF) Class 2: Questions 278 - 287 of 578

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## Question 278

### Question

MCQ▾

Complete the number series given: 529, 532,535, 538 …

### Choices

Choice (4)Response

a.

545

b.

580

c.

546

d.

541

## Question 279

### Question

MCQ▾

Complete the number series given: 7, 14, 21, 28, 35,42, 49 …

### Choices

Choice (4)Response

a.

54

b.

52

c.

60

d.

56

## Question 280

### Question

MCQ▾

Complete the number series given: 240, 250, 260,270, 280 …

### Choices

Choice (4)Response

a.

220

b.

240

c.

280

d.

290

## Question 281

### Question

MCQ▾

Complete the number series given: 5, 10, 15,20, 25 …

### Choices

Choice (4)Response

a.

45

b.

35

c.

40

d.

30

## Question 282

### Question

MCQ▾

Complete the number series given: 9, 99,999, 9999 … .

### Choices

Choice (4)Response

a.

9999

b.

99

c.

9

d.

99999

## Question 283

### Question

MCQ▾

Complete the number series given: 6, 12, 18,24, 30 …

### Choices

Choice (4)Response

a.

36

b.

41

c.

38

d.

39

## Question 284

### Question

MCQ▾

Complete the number series given: 1, 11, 111,1111, 11111 …

### Choices

Choice (4)Response

a.

1111

b.

12

c.

111111

d.

11111

## Question 285

### Question

MCQ▾

Complete the number series given: 5, 20,35, 50,65 …

### Choices

Choice (4)Response

a.

70

b.

65

c.

80

d.

75

## Question 286

### Question

MCQ▾

Complete the number series given: 11, 22, 33,44, 55 …

### Choices

Choice (4)Response

a.

66

b.

88

c.

55

d.

77

## Question 287

### Question

MCQ▾

Complete the number series given: 600, 620,640, 660 …

### Choices

Choice (4)Response

a.

680

b.

640

c.

670

d.

620