Question : Select the option that expresses the given sentence in passive voice.

The Mesopotamians invented the decimal system.

Option 1: The decimal system was invented by the Mesopotamians.

Option 2: The decimal system is invented by the Mesopotamians.

Option 3: The decimal system is an invention of the Mesopotamians.

Option 4: The decimal system has been invented by the Mesopotamians.

Question : Which of the following is not an operating system?

Option 1: Android

Option 2: Vista

Option 3: iOS

Option 4: Opera

Question : If $a^{3}+\frac{1}{a^{3}}=2$, then the value of $\frac{a^{2}+1}{a}$ is ($a$ is a positive number):

Option 1: 1

Option 2: 2

Option 3: 3

Option 4: 4

Question : Which one among the following is a main system board of a computer?

Option 1: CPU

Option 2: Keyboard

Option 3: Microchip

Option 4: Mother board

Question : Direction: Which one of the given responses would be a meaningful order of the following?

1. Absorption

2. Digestion

3. Nutrition

4. Excretion

Option 1: 3, 1, 2, 4

Option 2: 2, 1, 3, 4

Option 3: 3, 4, 2, 1

Option 4: 3, 2, 1, 4