JEE Main 2022 Mathematics question
The probability that a randomly chosen one-one function from the set {a, b, c, d} to the set {1, 2, 3, 4, 5} satisfies f(a) + 2f(b) − f(c) = f(d) is :
Answer: (4)
Solution
The number of one-one functions from a 4-element set to a 5-element set is . The ordered quadruples (f(a), f(b), f(c), f(d)) of distinct values from {1, …, 5}
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