Mental Ability-Basic Arithmetic (NCO- Cyber Olympiad Class 6): Questions 92 - 97 of 268

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Question number: 92

» Mental Ability » Basic Arithmetic

MCQ▾

Question

83 when expressed as a percentage of 4916 , is ________.

Choices

Choice (4) Response
a.

85%

b.

87.31%

c.

75%

d.

25%

Question number: 93

» 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: 94

» 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: 95

» 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: 96

» 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

Question number: 97

» Mental Ability » Basic Arithmetic

MCQ▾

Question

If + stands for ‘division’, stands for ‘equal to’, × stands for ‘addition’, ÷ stands for ‘greater than’, = stands for ‘less than’, > stands for ‘multiplication’ and < stands for ‘subtraction’, then which of the following alternative is correct?

Choices

Choice (4) Response
a.

11×5<17<4×2

b.

11>5×17>4>2

c.

11<5×1÷7>4×2

d.

11÷5×1=7+4>2

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