Skip to content
Question 44 of 97

Q.What possible output(s) from the given options will NOT be displayed when the following code is executed ? Also, mention, for how many iterations the for loop in the given code will run ? import random a = [1,2,3,4,5,6] for i in range(4): j = random.randrange(i,5) print(a[j],end='-') print() Options : (A) 3-4-5-4- (B) 2-2-4-5- (C) 4-3-3-5- (D) 5-1-2-4-

CBSECBSE Class XII Board 2026Subjective· 2mImportance★★★★★
45% · 44/97 Questions
🔒 Locked · start free trial →

You're viewing a preview — the full solution, concept, methods & PYQ mapping are locked.

Start your 14-day free trial to unlock the full solution →

The loop runs exactly 4 iterations (i = 0,1,2,3). In iteration i, randrange(i,5) can only pick an index from i to 4, so the smallest printable value keeps rising. Option (D) 5-1-2-4- is impossible — its 2nd and 3rd values need indices that are already out of reach.

Concept — randrange(i, 5) shrinks the choices every pass

random.randrange(start, stop) returns an integer from start up to stop - 1. Here the start is the loop variable i, so with every iteration the lowest reachable index climbs by one, while the highest stays 4 (index 5 — value 6 — is never reachable).

import random
a = [1,2,3,4,5,6]
for i in range(4):
    j = random.randrange(i,5)
    print(a[j],end='-')
print()

range(4) produces i = 0, 1, 2, 3 → the loop runs 4 times, printing 4 values each followed by -.

Possibility table

Iteration iPossible j = randrange(i,5)Possible printed value a[j]
00, 1, 2, 3, 41, 2, 3, 4, 5
11, 2, 3, 42, 3, 4, 5
22, 3, 43, 4, 5
33, 44, 5

Two hard constraints follow: the value 1 can appear only in position 1, and the value 6 can never appear.

Checking each option position by position

OptionPos 1 (i=0)Pos 2 (i=1)Pos 3 (i=2)Pos 4 (i=3)Verdict
(A) 3-4-5-4-3 → j=2 ✓4 → j=3 ✓5 → j=4 ✓4 → j=3 ✓possible

Unlock everything free for 14 days

  • Full step-by-step solutions
  • Concept-first explanations
  • Methods, shortcuts & mistakes
  • PYQ mapping + timed mock tests

Full access for 14 days. No credit card required.