Page 120 - Computer Science V2.0 Class 11

Case-based Questions

1. Each one of you must have seen a traffic light. It has three colours—red, amber, and green which indicate the passerby to
stop, be ready, and go, respectively. While teaching problem-solving in class, the teacher assigns you the task—of creating
an algorithm for crossing a traffic signal. Complete the assigned task.
Ans. Algorithm:
while traffic signal is amber or red
Wait
end-while
Quickly cross the road
2. Surya is an entrepreneur. He is trying to get investments for his latest project. He has got a database of potential investors
with their names and the maximum amount that they can invest. From that database, he wants his secretary to prepare
a list of only those investors who can invest a minimum amount of 25 lakhs and are available for an appointment. If he
gets an appointment, he will save the date to his calendar, otherwise, he will ignore the investor. For this, Surya wants
to create a flowchart for his secretary, so that she has a clear idea about the entire process. Surya knows that once
the process is understood, the secretary will be able to apply it to all the potential investors. Help Surya to complete
his task.
Ans.
Start

Pick up name of
investor

Is
amount Yes Add name to
> = 2500000 the list

No Is
appointment Yes Save appointment
No date fixed date

Stop
Process flow for handling an investor

3. Zaira is very fond of number games. Her teacher gave her a task to accept a number and display the following series till that
number.
1, 4, 9, 16, 25, …, n 2
She wants to write a pseudocode and draw a flowchart to solve this problem. Help her complete the task.

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