If m = number of distinct rational numbers p/q ∊ (0, 1) such that p, q ∊ {1, 2, 3, 4, 5} and n = number of onto mappings from {1, 2, 3} to {1, 2}, then m - n is

JEE Mains Model Paper 20

Question : 21 of 90

Marks: +1, -0

If m = number of distinct rational numbers

∊ (0, 1) such that p, q ∊ {1, 2, 3, 4, 5} and n = number of onto mappings from {1, 2, 3} to {1, 2}, then m - n is

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