# Mental Ability-Basic Arithmetic (NCO- Cyber Olympiad (SOF) Class 6): Questions 9 - 15 of 268

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 722 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 400.00 or

## Question number: 9

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

is equivalent to ________.

### Choices

Choice (4) Response

a.

50%

b.

60%

c.

35%

d.

45%

## Question number: 10

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

Which set of numbers is the prime factorization of 126?

### Choices

Choice (4) Response

a.

b.

(

c.

(2 × 5 × 3 × 3)

d.

## Question number: 11

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

L. C. M. of 81 and 54 is ________.

### Choices

Choice (4) Response

a.

81

b.

162

c.

54

d.

27

## Question number: 12

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

Find the prime number from given numbers.

### Choices

Choice (4) Response

a.

27

b.

69

c.

23

d.

39

## Question number: 13

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

A basket contains 300 mangoes. 75 mangos were distributed among students. The percentage of mangoes left in the basket is ________.

### Choices

Choice (4) Response

a.

75%

b.

30%

c.

25%

d.

50%

## Question number: 14

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

Harsh is learning mathematics, he has X number then he multiply the number by 7 and subtract 9 from the answer. Starting with X, how can he get his original number back?

### Choices

Choice (4) Response

a.

Divide X by 7 and then add 9 to the result

b.

Add 9 to X and then divide the resulting number by 7

c.

Subtract 9 from answer and then multiply the result by 7

d.

Multiply X by 9 and then subtract 7 from the result

## Question number: 15

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

HCF of two numbers is ________.

### Choices

Choice (4) Response

a.

The greatest number which divides each number exactly

b.

The greatest number exactly divisible by each number

c.

(The product of two numbers) their LCM

d.

Both a. and c. are correct

f Page