Mental Ability (NCO- Cyber Olympiad (SOF) Class 10): Questions 1 - 6 of 198

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Question number: 1

» Mental Ability » Basic Geometry

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MCQ▾

Question

The Volume of a solid metallic sphere is 2512 . It is melted and recast into solid right circular cones of radius 5 cm and height 16 cm. Calculate the number of cones recast.

Choices

Choice (4) Response

a.

9

b.

6

c.

8

d.

7

Question number: 2

» Mental Ability » Basic Algebra

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Question

If , which expression is equivalent to ?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 3

» Mental Ability » Days and Dates

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Question

If Tuesday falls on 25th December 1990, what day will be on 25th December 1992?

Choices

Choice (4) Response

a.

Monday

b.

Sunday

c.

Tuesday

d.

Friday

Question number: 4

» Mental Ability » Basic Statistics

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Question

Find the mean marks of students from the following cumulative frequency table:

Table of achieved marks by number of students

Representing the table of achieved marks by number of students

Marks

Number of Students

0 and above

10 and above

20 and above

30 and above

40 and above

50 and above

60 and above

70 and above

80 and above

90 and above

100 and above

80

76

71

65

58

50

41

31

20

8

0

Choices

Choice (4) Response

a.

78.9

b.

54.6

c.

62.5

d.

57.5

Question number: 5

» Mental Ability » Basic Algebra

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Question

Indicate in which one of the following equations x is neither directly nor inversely proportional to y.

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 6

» Mental Ability » Basic Geometry

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Question

In the figure drawn below, and are parallel and . What is ?

Polygon poly1 Polygon poly1: Polygon [A, B, 3] Polygon poly1 Polygon poly1: Polygon [A, B, 3] Arc c Arc c: Semicircle through G and H Arc d Arc d: Semicircle through I and J Segment f Segment f: Segment [A, B] of Polygon poly1 Segment g Segment g: Segment [B, C] of Polygon poly1 Segment h Segment h: Segment [C, A] of Polygon poly1 Segment i Segment i: Segment [C, D] Segment j Segment j: Segment [E, F] Point A A = (3.7,2.64) Point A A = (3.7,2.64) Point A A = (3.7,2.64) Point B B = (1.92, -0.46) Point B B = (1.92, -0.46) Point B B = (1.92, -0.46) Point C Point C: Polygon [A, B, 3] Point C Point C: Polygon [A, B, 3] Point C Point C: Polygon [A, B, 3] Point D D = (8.46, -0.46) Point D D = (8.46, -0.46) Point D D = (8.46, -0.46) Point E E = (4.66, -1.68) Point E E = (4.66, -1.68) Point E E = (4.66, -1.68) Point F F = (8.12,3.2) Point F F = (8.12,3.2) Point F F = (8.12,3.2) 50â° text1 = “50â°â€ 50â° text1_1 = “50â°â€

Image of a Triangle ABC and a Parallel Line EF

Representing the image of a triangle ABC and a parallel line EF

Choices

Choice (4) Response

a.

b.

c.

d.

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