Statistics & Probability (IMO- Mathematics Olympiad (SOF) Class 10): Questions 20 - 25 of 80

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Question number: 20

» Statistics & Probability

MCQ▾

Question

In a single throws of a die, the probability of getting a multiple of 3 is ________

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 21

» Statistics & Probability

MCQ▾

Question

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

Choices

Choice (4) Response

a.

125

b.

111

c.

120

d.

115

Question number: 22

» Statistics & Probability

MCQ▾

Question

The mean of 11 observations is 30. If the mean of the first 6 observations is 40 and that of the last 6 observations is 44, then the Sixth observation is ________

Choices

Choice (4) Response

a.

174

b.

128

c.

137

d.

131

Question number: 23

» Statistics & Probability

MCQ▾

Question

The mean weight of a class of 24 students is kg. if the weight of the teacher is included, the mean rises by 400 g. Then the weight of the teacher is ________

Choices

Choice (4) Response

a.

55 kg

b.

45 kg

c.

65 kg

d.

50 kg

Question number: 24

» Statistics & Probability

MCQ▾

Question

The average temperatures of Monday, Tuesday, Wednesday and Thursday was . The average temperature of Tuesday, Wednesday, Thursday and Friday was . If the temperature on Monday was , then the temperature on Friday was ________.

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 25

» Statistics & Probability

MCQ▾

Question

The mean of ten numbers is 60. If one number is excluded, then their mean is 50, the excluded number is ________

Choices

Choice (4) Response

a.

130

b.

160

c.

140

d.

150

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