Q&A – Predicting Outcomes of Repetition (Primary 4 – 4CT.05)

The algorithm below will output “Hi” 3 times. Repeat 3 times OUTPUT "Hi"

• True

• False

Answer explanation

The algorithm repeats the output "Hi" 3 times as specified. Therefore, the statement is true.

What is the output of this algorithm? Repeat 4 times OUTPUT "Clap"

• Clap

• Clap Clap

• Clap Clap Clap Clap

• No output

Answer explanation

The algorithm repeats the output "Clap" 4 times. Therefore, the correct output is "Clap Clap Clap Clap", which corresponds to the choice "Clap Clap Clap Clap".

Repeat 2 times OUTPUT "Good" OUTPUT "Morning" What will the output be?

• Good Morning Good Morning

• Good Good Morning Morning

• Good Morning Good Morning

• Morning Good Morning Good

Answer explanation

The instructions state to repeat the outputs "Good" and "Morning" two times. Therefore, the correct output is "Good" followed by "Morning", repeated twice: "Good", "Morning", "Good", "Morning".

What numbers will be printed?

• 1, 2, 3

• 2, 3, 4

• 3, 4, 5

• 4, 5, 6

Answer explanation

The code likely prints the first three numbers starting from 1. Therefore, the correct output is 1, 2, 3.

What will be printed?

• 5, 4, 3

• 3, 4, 5

• 4, 5, 3

• 5, 3, 4

Answer explanation

The code likely prints the values in the order they are defined. The correct choice is '5, 4, 3', indicating that the first value printed is 5, followed by 4, and then 3.

This algorithm will print “Star” forever: Forever OUTPUT "Star" True or False?

• True

• False

Answer explanation

The algorithm is designed to run indefinitely in a loop, continuously outputting 'Star'. Therefore, the statement is true: it will print 'Star' forever.

What is the total number of outputs? Repeat 3 times OUTPUT "Yes" OUTPUT "No"

• 2

• 3

• 6

• Infinite

Answer explanation

The outputs "Yes" and "No" are repeated 3 times each. Therefore, 3 "Yes" outputs and 3 "No" outputs result in a total of 6 outputs. Thus, the correct answer is 6.

Set score = 0 Repeat until score = 3 score = score + 1 OUTPUT score What will the outputs be? (Write the numbers separated by commas)

• 1, 2, 3

• 0, 1, 2

• 0, 1, 2, 3

• 2, 3, 4

Answer explanation

The loop starts with score = 0. It increments score by 1 and outputs it until score equals 3. The outputs will be 1, 2, and 3, as the loop stops before outputting 3. Thus, the correct answer is 1, 2, 3.

Compare Outcomes Algorithm A: Repeat 5 times OUTPUT "Run" Algorithm B: Repeat 2 times OUTPUT "Run" Which produces more outputs?

• Algorithm A (5 times)

• Algorithm B (2 times)

• Both produce the same number of outputs

Answer explanation

Algorithm A outputs 'Run' 5 times, while Algorithm B outputs it only 2 times. Therefore, Algorithm A produces more outputs.

Predict the output: Repeat 3 times OUTPUT "Jump" Repeat 2 times OUTPUT "Stop" Write the output sequence: ________

• Jump Jump Jump Stop Stop

• Jump Stop Jump Stop Jump

• Jump Jump Stop Stop Jump

• Jump Jump Jump Stop

Answer explanation

The code first outputs 'Jump' three times, followed by 'Stop' two times. Thus, the correct output sequence is 'Jump, Jump, Jump, Stop, Stop', matching the first answer choice.