Mental Ability-Basic Algebra (NCO- Cyber Olympiad Class 7): Questions 1 - 4 of 11

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Question number: 1

» Mental Ability » Basic Algebra

MCQ▾

Question

Statement 1: If x and y are any two rational numbers such that x < y, then 12×(x+y) is a rational number lying between x and y.

Statement 2: 12×(13+12) is a rational number that lies between 13 and 12 .

Is statement 2 an example for statement 1?

Choices

Choice (4) Response
a.

Yes

b.

Information Incomplete

c.

Can’t say

d.

No

Question number: 2

» Mental Ability » Basic Algebra

MCQ▾

Question

If ab and cd are any two rational numbers then we define:

abcd=ab+(cd)

Thus, subtracting a rational number means adding its additive inverse.

Based on the statement given above solve the following problem: Subtract 57 from 25 .

Choices

Choice (4) Response
a.

1135

b.

3935

c.

1135

d.

713

Question number: 3

» Mental Ability » Basic Algebra

MCQ▾

Question

If pq and rs be any two rational numbers then we define: pqrs=pq+(rs)

Thus, subtracting a rational number means adding its additive inverse. Based on the statement given above solve the following Problem: Subtract 63 from 38 .

Choices

Choice (4) Response
a.

3924

b.

4024

c.

3924

d.

1124

Question number: 4

» Mental Ability » Basic Algebra

MCQ▾

Question

If st and uv be any two rational numbers then we define: stuv=st+(uv)

Thus, subtracting a rational number means adding its additive inverse. Based on the statement given above solve the following Problem: Subtract 85 from 32 .

Choices

Choice (4) Response
a.

110

b.

3110

c.

110

d.

1410

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