# Statistics & Probability (IMO- Mathematics Olympiad Class 10): Questions 54 - 59 of 80

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## Question number: 54

» Statistics & Probability

MCQ▾

### Question

The average of 10 number is 60. If one of the numbers is excluded, the mean gets reduced by 10. Then the excluded number is ________

### Choices

Choice (4) Response

a.

165

b.

150

c.

145

d.

155

## Question number: 55

» Statistics & Probability

MCQ▾

### Question

If occur with frequencies respectively, then the arithmetic mean is ________

### Choices

Choice (4) Response

a.

34.26

b.

26.34

c.

62.43

d.

43.62

## Question number: 56

» Statistics & Probability

MCQ▾

### Question

A jar contains 8 Pink cubes, 5 Pink spheres, 6 Orange cubes, and 6 Orange spheres. If you select an object at random, what is the probability that the object is Orange or a cube?

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 57

» Statistics & Probability

MCQ▾

### Question

The mean of is ________

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 58

» Statistics & Probability

MCQ▾

### Question

The average of 6 number is 40. If one of the numbers is excluded, the mean gets reduced by 5. Then the excluded number is ________

### Choices

Choice (4) Response

a.

65

b.

35

c.

55

d.

45

## Question number: 59

» Statistics & Probability

MCQ▾

### Question

A Train maintains an average speed of 40 km/hr while going from L to M and maintains an average speed of 60 km/hr while coming back from M to L. the average speed of the bus is ________.

### Choices

Choice (4) Response

a.

b.

c.

d.

f Page