# NCO- Cyber Olympiad (SOF) Class 7: Questions 209 - 213 of 417

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## Question number: 209

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MCQ▾

### Question

The average age of 30 children in a class is 10 years. If the teacher’s age is included, the average age becomes 12 years. Find the teacher’s age.

### Choices

Choice (4) Response

a.

45

b.

42

c.

72

d.

35

## Question number: 210

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MCQ▾

### Choices

Choice (4) Response

a.

19418

b.

5012.5

c.

2190

d.

19578

## Question number: 211

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MCQ▾

### Question

Two positions of a dice are shown below. When there are 4 circles at the top, the number of circles at the bottom will be Two Different Positions of a Dice Are Given – in 2 Cubes Find out the number of circles at the bottom when there are four circles at the top

### Choices

Choice (4) Response

a.

6

b.

3

c.

4

d.

5

## Question number: 212

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MCQ▾

### Question

In a certain code, SUNDAY is coded as YADNUS. How would CREATION be code in that code?

### Choices

Choice (4) Response

a.

INOTAERL

b.

IONTEARC

c.

NOITAERC

d.

ERCITANO

## Question number: 213

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MCQ▾

### Question

Which of the following options are correct?

1. Every integer is a rational number and every fraction is a rational number

2. A rational number is positive if p and q are either both positive and both negative.

3. A rational number is negative if one of p and q is positive and the other is negative.

4. If there are two rational numbers with common denominator then the one with the larger numerator is larger than the other.

### Choices

Choice (4) Response

a.

Statements 2 and 3 are incorrect

b.

Statement 1 is incorrect

c.

Statements 1 and 4 and incorrect

d.

None of the above