IMO Level 1- Mathematics Olympiad (SOF) Class 10: Questions 443 - 446 of 968

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Question number: 443

» Statistics & Probability

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MCQ▾

Question

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

Choices

Choice (4) Response

a.

62.43

b.

26.34

c.

43.62

d.

34.26

Question number: 444

» Triangle, Circle & Constructions

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MCQ▾

Question

Given below are the steps of construction of a pair of tangents to a circle of radius 4 cm from a point on the concentric circle of radius 6 cm. find which of the following step is wrong?

  1. Step I: Take a point O on the plane paper and draw a circle of radius . Also, draw a concentric circle of radius .

  2. Step II: Find the mid-point A of OB and draw a circle of radius . Suppose this circle intersects the circle of radius 4 cm at P and Q.

  3. Step III: Join BP and BQ to get the desired tangents.

 Given the pair of tangents to a circle of radius 4 cm

Given the Pair of Tangents to a Circle of Radius 4 Cm

Given the pair of tangents to a circle of radius 4 cm from a point on the concentric circle of radius 6 cm and find the which of the following step is wrong

Choices

Choice (4) Response

a.

(1) and (2)

b.

Only (2)

c.

Only (1)

d.

(2) and (3)

Question number: 445

» Coordinate Geometry

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MCQ▾

Question

Points are joined to form which shape?

Choices

Choice (4) Response

a.

Pentagon

b.

Snip single corner Rectangle

c.

Snip round corner Rectangle

d.

Chord

Question number: 446

» Coordinate Geometry

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MCQ▾

Question

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

Choices

Choice (4) Response

a.

25

b.

24

c.

28

d.

22