Mental Ability (NCO- Cyber Olympiad Class 9): Questions 13 - 18 of 219

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Question number: 13

» 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 9000. The original count of bacteria in the sample is________

Choices

Choice (4) Response

a.

11458

b.

11286

c.

11784

d.

11956

Question number: 14

» Mental Ability » Basic Algebra

MCQ▾

Question

The solution of the equations Equation is

Choices

Choice (4) Response

a.

There is no solution

b.

Equation

c.

Equation

d.

Equation

Question number: 15

» Mental Ability » Basic Algebra

MCQ▾

Question

When simplified and expressed with negative exponents, the expression Equation is equal to

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 16

» Mental Ability » Basic Arithmetic

MCQ▾

Question

A bike travels 70 km from Rajkot to Jamnagar at 14 km per hour but returns the same distance at 15 km per hour. The average speed for the round trip is closest to

Choices

Choice (4) Response

a.

13 km/hr

b.

10km/hr

c.

12km/hr

d.

16km/hr

Question number: 17

» Mental Ability » Basic Algebra

MCQ▾

Question

Equation , then Equation equals

Choices

Choice (4) Response

a.

18

b.

Equation

c.

Equation

d.

Equation

Question number: 18

» Mental Ability » Basic Arithmetic

MCQ▾

Question

Equation Only if

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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