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11th Standard English Medium Computer Science Subject Specification and Abstraction Book Back 3 Mark Questions with Solution updated Book back Questions

Published on: 13/05/2022

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Std: 11th Standard - Computer Science

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Questions:

Generic 3

5 x 3 = 15

What is the form and meaning of assignment statement?

How is state represented in algorithms?

What is abstraction?

What is the format of the specification of an algorithm?

When do you say that a problem is algorithmic in nature?

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Answers Key:

Generic 3

5 x 3 = 15

Assignment statement is used to assign values to the variables.
The variable on the left side of the assignment operator and a value on the right side.
Variable := Value

The state represented in a algorithm is set of variables. At any place the value of the variables are substituted and evaluation is done.

Abstraction :
It is the facility to define objects. It also involves removal of unnecessary attributes and defining only essential attributes.
For example, when we represent the state of a process we select only the variables essential to the problem and ignore inessential details.

Let P be the required property of the inputs and Q the property of the desired outputs.
Format of specification of an algorithm:
(a) Algorithm name (Inputs)
(b) Inputs - P
(c) Outputs - Q

A Problem is algorithmic in nature when its solution involves the construction of an algorithm.
Also when the
(a) Input data and output data of the problem is specified
(b) Relation between the input data and the output data is specified