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CGP EDU Academic Team
Published on: August 13, 2026
Let E = {1, 2, 3, 4} and F = {1, 2}. Then the number of onto functions from E to F is (2001 S)
Text Solution
Verified by ExpertsThe correct answer is:
A
From E to F we can define, in all 2 × 2 × 2 × 2 = 16 functions (2 options for each element of E) out of which 2 are into, when all the elements of E either map to 1 or to 2.
∴ ∴ No. of onto functions = 16 – 2 = 14
∴ ∴ is the correct alternative.
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