BANK SBI Clerk Mock Test Series 2025 (Pre + Mains) Quantitative Aptitude Permutation and Combination
How many 7-digit numbers are formed from the digit 1, 2, 3, 4, 5, 6 and 7 so that odd number is placed at odd places and even number is placed at even place.
1
144
2
124
3
154
4
156
5
134