Mental Ability (NCO- Cyber Olympiad (SOF) Class 9): Questions 124 - 131 of 219

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Question number: 124

» Mental Ability » Basic Algebra

MCQ▾

Question

If is factor of , find the value of a.

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 125

» Mental Ability » Basic Arithmetic

MCQ▾

Question

Sterling gold is 92.5 % pure gold. How many grams of sterling gold must be mixed to a 90 % gold alloy to obtain a 500 gm of a 91 % gold alloy?

Choices

Choice (4) Response

a.

100 gm

b.

50 gm

c.

150 gm

d.

200 gm

Question number: 126

» Mental Ability » Basic Algebra

MCQ▾

Question

What is equivalent to ?

Choices

Choice (4) Response

a.

b.

c.

d.

10abc

Question number: 127

» Mental Ability » Ranking Test

MCQ▾

Question

Avinash is Ravi’s eldest brother. Ravi is younger than Ajay. Ravi and Ajay are not brothers. Which of the following statements is definitely true?

Choices

Choice (4) Response

a.

Ajay is younger than Avinash

b.

Avinash is younger than Ajay

c.

Ajay is younger than Ravi

d.

None of the above

Question number: 128

» Mental Ability » Basic Algebra

MCQ▾

Question

If , find the value of

Choices

Choice (4) Response

a.

322

b.

324

c.

323

d.

325

Question number: 129

» Mental Ability » Basic Arithmetic

MCQ▾

Question

Given, , and find the value of the following expression correct up to three places of decimal: .

Choices

Choice (4) Response

a.

-17

b.

-12

c.

-10

d.

-30

Question number: 130

» Mental Ability » Basic Algebra

MCQ▾

Question

is a factorization product of

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 131

» Mental Ability » Basic Arithmetic

MCQ▾

Question

Divide 45 among four parts such that 2 added to first part, 2 subtracted from second part, third multiplied by 2 and the fourth divided by2 are all equal.

Choices

Choice (4) Response

a.

5,8, 12,20

b.

8,12,5, 20

c.

12,8, 5,20

d.

20,5, 8,12

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