Published by:
CGP EDU Academic Team
Published on: August 13, 2026
A number lock has 4 dials, each dial has the digits 0, 1, 2, ........,9. What is the maximum unsuccessful attempts to open the lock?
Text Solution
Verified by ExpertsThe correct answer is:
9999
(9999)
Sol. Total unsuccessful attempts to open the lock is
= (total attempt – successful attempt) = 10 × 10 × 10 × 10 – 1 = 10000 – 1 = 9999
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