defence exam Coast Guard Navik GD (General Duty) 02/2025 Mock Test Series Mathematics Permutations and Combinations Fundamental Principles of Counting
The number of 4 digit numbers without repetition that can be formed using the digits 1, 2, 3, 4, 5, 6, 7 in which each number has two odd digits and two even digits is
1
432
2
436
3
450
4
454