Mental Ability-Basic Arithmetic (NCO- Cyber Olympiad Class 9): Questions 8 - 13 of 49

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 440 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 300.00 or

Question number: 8

» Mental Ability » Basic Arithmetic

MCQ▾

Question

The bacteria in a culture grows by Equation in the first hour, decreases by Equation in the second hour and again increases by Equation 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: 9

» 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: 10

» Mental Ability » Basic Arithmetic

MCQ▾

Question

In a family, the father took Equation 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: 11

» Mental Ability » Basic Arithmetic

MCQ▾

Question

Equation Only if

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 12

» Mental Ability » Basic Arithmetic

MCQ▾

Question

Equation When simplified is

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 13

» Mental Ability » Basic Arithmetic

MCQ▾

Question

A car travels 120 km from A to B at 30 km per hour but returns the same distance at 40 km per hour. The average speed for the round trip is closest to

Choices

Choice (4) Response

a.

36km/hr

b.

33 km/hr

c.

35km/hr

d.

34km/hr

f Page
Sign In