Mental Ability (NCO- Cyber Olympiad Class 6): Questions 137 - 143 of 394

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Question number: 137

» Mental Ability » Basic Algebra

MCQ▾

Question

Given, x×y=x(y+1),x,yR the value of 11×3 is ________.

Choices

Choice (4) Response

a.

28

b.

2 11

c.

6

d.

44

Question number: 138

» Mental Ability » Basic Geometry

MCQ▾

Question

In equivalent triangle ABC, D and E are the midpoints of AB and BC respectively. Which of the following is not true?

A triangle with two mid points in two sides

A Triangle With Two Mid Points in Two Sides

Find the wrong point from below given options about triangle

Choices

Choice (4) Response

a.

ADC=BDC

b.

AEintersactsCD

c.

LengthofAB=BC

d.

LengthofBEEC

Question number: 139

» Mental Ability » Basic Algebra

MCQ▾

Question

Given, a+b=a(b2),a,bR the value of 75+5 is ________.

Choices

Choice (4) Response

a.

15

b.

75

c.

2 15

d.

12

Question number: 140

» Mental Ability » Basic Arithmetic

MCQ▾

Question

By how much must 3 be increased so that it bears same ratio to 10 as 18 to 36?

Choices

Choice (4) Response

a.

1

b.

4

c.

2

d.

3

Question number: 141

» Mental Ability » Basic Arithmetic

MCQ▾

Question

0.081×5.71.71=?

Choices

Choice (4) Response

a.

2.7

b.

270

c.

0.27

d.

27

Question number: 142

» Mental Ability » Basic Arithmetic

MCQ▾

Question

The subtraction of two irrational numbers________.

Choices

Choice (4) Response

a.

May be rational in some cases and irrational in some other cases

b.

An integer

c.

Is always irrational

d.

Is always rational

Question number: 143

» Mental Ability » Basic Arithmetic

MCQ▾

Question

By how much must 27 be decreased so that it bears same ratio to 49 as 12 to 28?

Choices

Choice (4) Response

a.

3

b.

2

c.

6

d.

7

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