Q.What possible output(s) are expected to be displayed on screen at the time of execution of the program from the following code? Also specify the minimum and maximum values that can be assigned to the variable End. import random Colours = ["VIOLET","INDIGO","BLUE","GREEN","YELLOW","ORANGE","RED"] End = randrange(2)+3 Begin = randrange(End)+1 for i in range(Begin,End): print(Colours[i],end="&")

Rules: randrange(n) returns an integer from 0 to n-1.

So End = randrange(2)+3 gives 3 or 4, and Begin = randrange(End)+1 gives 1 … End. The loop prints Colours[Begin] … Colours[End-1], each followed by &.

Every possible output:

Concept — what randrange can produce

random.randrange(n) returns a random integer from 0 up to n-1 (the stop value is excluded). Applying that to each line (the paper writes randrange(...) after import random; per the CBSE marking convention it is evaluated as random.randrange(...)):

import random
Colours = ["VIOLET","INDIGO","BLUE","GREEN","YELLOW","ORANGE","RED"]
End = random.randrange(2)+3      # randrange(2) is 0 or 1  ->  End is 3 or 4
Begin = random.randrange(End)+1  # randrange(End) is 0..End-1  ->  Begin is 1..End
for i in range(Begin,End):
    print(Colours[i],end="&")

• End: randrange(2) gives 0 or 1, so End is 3 or 4.
• Begin: randrange(End) gives 0 … End-1, so Begin is 1 … End — never 0.
• The loop range(Begin, End) prints Colours[i] for i = Begin … End-1, each followed by &.

Index map of the list:

Exhaustive trace — every possible run