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CGP EDU Academic Team
Published on: August 13, 2026
A mapping is selected at random from all the mappings defined on the set A consisting of three distinct elements. Probability that the mapping selected is one to one is 
(where p and q are co-prime natural numbers) then p + q is
Text Solution
Verified by ExpertsThe correct answer is:
11
(11)
Sol. A 
A
3 elements 3 elements
n(s) = number of mapping from A to A = 3 3 = 27
n(E) = number of one-one from A to A = 3! = 6
P = 
= 
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