IMO Level 1- Mathematics Olympiad (SOF) Class 10: Questions 428 - 433 of 968

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Question number: 428

» Statistics & Probability

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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.

488

b.

466

c.

468

d.

486

Question number: 429

» Statistics & Probability

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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: 430

» Statistics & Probability

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MCQ▾

Question

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

Choices

Choice (4)Response

a.

78.5

b.

32.5

c.

65.5

d.

43.6

Question number: 431

» Coordinate Geometry

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MCQ▾

Question

Area of quadrilateral formed by the vertices is ________

Choices

Choice (4)Response

a.

310 sq. units

b.

206 sq. units

c.

289 sq. units

d.

196 sq. units

Question number: 432

» Statistics & Probability

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MCQ▾

Question

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

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 433

» Statistics & Probability

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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.

b.

c.

d.

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