# Mental Ability (NCO- Cyber Olympiad (SOF) Class 9): Questions 50 - 55 of 219

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## Question number: 50

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

How many liters of silicon solution should be added to 70 liters of a silicon solution to make a solution?

### Choices

Choice (4) Response

a.

70 liters

b.

80 liters

c.

10 liters

d.

20 liters

## Question number: 51

» Mental Ability » Ranking Test

MCQ▾

### Question

Some friends are standing on ground. Somya is standing next to Meet and Radhika is next to Manali. Manali is not standing with Prem. Prem is on the right end of the ground and Radhika is in second position from left hand side. Meet is on the left side of Somya and Somya to the left side of Prem. Meet and Radhika are sitting together. Who is sitting in the center?

### Choices

Choice (4) Response

a.

Manali

b.

Somya

c.

Meet

d.

## Question number: 52

» Mental Ability » Basic Algebra

MCQ▾

If then b equals

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 53

» Mental Ability » Basic Algebra

MCQ▾

### Question

The solution of the equations is

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 54

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

In a family, the uncle took of the lava cake and he had 6 times as much as each of the other members had. The total number of family member is ________

### Choices

Choice (4) Response

a.

43

b.

31

c.

39

d.

21

## Question number: 55

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

The ratio of the ages of Neeta and Ravi is 2: 5. After 8 years, their ages will be in the ratio of 1: 2. The difference in their present age is: (in years)

### Choices

Choice (4) Response

a.

32

b.

24

c.

29

d.

26

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