CUET Preparation Today
Total number of one - one function from the set A = {1, 2, 3, 4} to the set B = {a, b, c, d, e} are |
24 120 625 1024 |
120 |
The correct answer is Option (2) - 120 No. of elements in A = 4 No. of elements in B = 5 so no. of elements to pick from B = 4 No. of ways to do so = ${^5C}_4$ No of permutations → 4! so total no of functions → ${^5C}_4×4!=120$ |
