Mental Ability-Basic Arithmetic (NCO- Cyber Olympiad Class 6): Questions 59 - 64 of 268

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Question number: 59

» Mental Ability » Basic Arithmetic

MCQ▾

Question

Hiral think of a number then she subtract 5 from it and multiply the answer by 4. Let the resulting number be X. Starting with X, how can she get the original number back?

Choices

Choice (4) Response

a.

Multiply X by 5 and then subtract 4 from the result

b.

Divide X by 4 and then add 5 to the result

c.

Divide X by 4 and then subtract 5 from the result

d.

Multiply X by 4 and then add 5 to the result

Question number: 60

» Mental Ability » Basic Arithmetic

MCQ▾

Question

The number that should replace the triangle so that the following forms a proportion is________.

23, 56, 42, ∆

Choices

Choice (4) Response

a.

105

b.

100

c.

102

d.

104

Question number: 61

» Mental Ability » Basic Arithmetic

MCQ▾

Question

14 is equivalent to ________.

Choices

Choice (4) Response

a.

50%

b.

30%

c.

25%

d.

75%

Question number: 62

» Mental Ability » Basic Arithmetic

MCQ▾

Question

I think of a number, add 10 to it and divide the answer by 2. Let the resulting number be X. Starting with X, how can I get my original number back?

Choices

Choice (4) Response

a.

Add 2 to X and then divide the resulting number by 10

b.

Multiply X by 2 and then add 10 to the result

c.

Divide X by 2 and then add 10 to the result

d.

Multiply X by 2 and then subtract 10 from the result

Question number: 63

» Mental Ability » Basic Arithmetic

MCQ▾

Question

How many numbers from 45 to 86 divisible by 9?

Choices

Choice (4) Response

a.

5

b.

3

c.

4

d.

7

Question number: 64

» Mental Ability » Basic Arithmetic

MCQ▾

Question

If all the numbers from 12 to 110 which are divisible by 12 are arranged in descending order then which number will be at 8 th place?

Choices

Choice (4) Response

a.

84

b.

24

c.

12

d.

96

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