IMO- Mathematics Olympiad (SOF) Class 10: Questions 379 - 384 of 958

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Question number: 379

» 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: 380

» Coordinate Geometry

MCQ▾

Question

If the centroid of the triangle formed by the points is at the origin, then

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Choice (4) Response

a.

b.

c.

d.

Question number: 381

» 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

Question number: 382

» Coordinate Geometry

MCQ▾

Question

Find the area of the triangle whose vertices are and

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Choice (4) Response

a.

b.

c.

d.

Question number: 383

» Coordinate Geometry

MCQ▾

Question

XYZ is an isosceles triangle. If the coordinates of the base are, then the coordinates of the vertex Z can be

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 384

» Statistics & Probability

MCQ▾

Question

The mean of 7 observations is 20. If the mean of the first 4 observations is 20 and that of the last 4 observations is 16, then the Fourth observation is ________

Choices

Choice (4) Response

a.

3

b.

7

c.

8

d.

4

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