# Mental Ability (NCO- Cyber Olympiad Class 9): Questions 19 - 24 of 219

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## Question number: 19

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

The bacteria in a culture grows by in the first hour, decreases by in the second hour and again increases by in the third hour. If at the end of the third hour the count of bacteria is 14000. The original count of bacteria in the sample is________

### Choices

Choice (4) Response

a.

19199

b.

20199

c.

17199

d.

18199

## Question number: 20

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

The ratio of the ages of Mayuri and Mayur is 4: 3. The sum of their ages is 28 years. The ratio of their ages after 8 years will be:

### Choices

Choice (4) Response

a.

6: 5

b.

12: 17

c.

4: 7

d.

7: 4

## Question number: 21

» Mental Ability » Days and Dates

MCQ▾

### Question

If seventh day of a month is three days earlier than Friday, what day will it be on nineteenth day of the month?

### Choices

Choice (4) Response

a.

Wednesday

b.

Monday

c.

Sunday

d.

Friday

## Question number: 22

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

In a family, the father took of the cake and he had 3 times as much as each of the other members had. The total number of family member is ________

### Choices

Choice (4) Response

a.

3

b.

10

c.

7

d.

12

## Question number: 23

» Mental Ability » Basic Arithmetic

MCQ▾

Only if

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 24

» Mental Ability » Basic Statistics

MCQ▾

### Question

Choose from the four diagrams marked A, B, C and D the one that best illustrates the relationship among Radio artists, TV artists, Theater.

### Choices

Choice (4) Response

a.

b.

c.

d.

f Page