BANK IBPS RRB PO Mock Test Series 2025 (Pre + Mains) Quantitative Aptitude Permutation and Combination
How many 10 digits mobile numbers can be formed by using all 10 digits including repetition of digits and 0 cannot be the first digit to start the mobile number?
1
9 × 109
2
109 - 10P8
3
109
4
108
5
109 - 10P9