# Mental Ability-Basic Algebra (NCO- Cyber Olympiad (SOF) Class 9): Questions 88 - 92 of 101

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## Question number: 88

» Mental Ability » Basic Algebra

MCQ▾

### Question

A 108-cm piece of wire was cut into equal segments, which were then soldered at the ends to form the edges of a cube. What is the volume of the cube?

### Choices

Choice (4) Response

a.

648 cm3

b.

c.

d.

## Question number: 89

» Mental Ability » Basic Algebra

MCQ▾

### Question

Rahul has a broken fan belt on his car. The belt goes around 2 pulleys, whose centers are 15 cm apart and each pulley is 4 cm in diameter. How long should the belt be?

### Choices

Choice (4) Response

a.

45.6 cm

b.

42.6 cm

c.

40 cm

d.

45 cm

## Question number: 90

» Mental Ability » Basic Algebra

MCQ▾

### Question

A Stadium contained an equal number of boys and girls. 15 girls left to play tennis, leaving twice as many boys as girls in the Stadium. Then the number of students in the Stadium originally was________

### Choices

Choice (4) Response

a.

40

b.

70

c.

60

d.

15

## Question number: 91

» Mental Ability » Basic Algebra

MCQ▾

### Question

Which of the equations below represents the second step of the solution process?

Step 1.

Step 2. ________

Step 3.

Step 4.

Step 5.

Step 6.

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 92

» Mental Ability » Basic Algebra

MCQ▾

### Question

Can you guess this number.

1. The number is not an odd number
2. It has exactly four factors

3. If you reverse the digits, a prime number is formed

4. The sum of the digits is a two digit prime number

5. The number is less than the square root of

6. One of the digits is a square number

What number are we thinking of?

### Choices

Choice (4) Response

a.

44

b.

73

c.

74

d.

75

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