IMO- Mathematics Olympiad (SOF) Class 10: Questions 372 - 378 of 958

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Question number: 372

» 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: 373

» 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: 374

» Coordinate Geometry

MCQ▾

Question

The coordinates of the centre of a circle passing through is ________

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 375

» Coordinate Geometry

MCQ▾

Question

Find the area of triangle if the coordinates of vertices are is ________

Choices

Choice (4) Response

a.

9 sq. units

b.

5 sq. units

c.

2 sq. units.

d.

3 sq. units

Question number: 376

» Coordinate Geometry

MCQ▾

Question

Find the area of the quadrilateral, the coordinates of whose angular points taken in order are.

Choices

Choice (4) Response

a.

8

b.

6

c.

12

d.

10

Question number: 377

» Coordinate Geometry

MCQ▾

Question

Find the area of triangle if the coordinates of vertices are is ________

Choices

Choice (4) Response

a.

20.5 sq. units.

b.

19.3 sq. units

c.

33.5 sq. units

d.

45.2 sq. units

Question number: 378

» 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

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