Statistics & Probability (IMO- Mathematics Olympiad Class 10): Questions 46 - 51 of 79

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Question number: 46

» Statistics & Probability

MCQ▾

Question

The average of 15 results is 50. If the average of the first seven results is 82 and that of the last seven is 92, then the seventh result is ________

Choices

Choice (4) Response

a.

468

b.

488

c.

466

d.

486

Question number: 47

» Statistics & Probability

MCQ▾

Question

The average temperatures of Monday, Tuesday, Wednesday and Thursday was 36 . The average temperature of Tuesday, Wednesday, Thursday and Friday was 34 . If the temperature on Monday was 38 , then the temperature on Friday was ________.

Choices

Choice (4) Response

a.

30

b.

40

c.

60

d.

20

Question number: 48

» Statistics & Probability

MCQ▾

Question

The mean of 50 observations is 44. By error, one observation was noted as 36 was misread as 56. Then the correct mean is ________

Choices

Choice (4) Response

a.

43.6

b.

78.5

c.

32.5

d.

65.5

Question number: 49

» Statistics & Probability

MCQ▾

Question

Two dices are thrown simultaneously. The probability of getting a sum of 8 is ________

Choices

Choice (4) Response

a.

761

b.

536

c.

433

d.

625

Question number: 50

» Statistics & Probability

MCQ▾

Question

In a single throws of a die, the probability of getting a number is greater than 2 is ________

Choices

Choice (4) Response

a.

16

b.

54

c.

23

d.

32

Question number: 51

» Statistics & Probability

MCQ▾

Question

A bag contains Five green, four blue and Three orange marbles. If a marble is picked at random, then the probability that it is not an orange marble, is ________

Choices

Choice (4) Response

a.

14

b.

412

c.

912

d.

13

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