The number of natural numbers less than 7000 which can be formed by using the digits $0,1,3,7,9$ (repetition of digits allowed) is equal to: (1) 375 (2) 250 (3) 374 (4) 372
The number of natural numbers less than 7000 which can be formed by using the digits $0,1,3,7,9$ (repetition of digits allowed) is equal to:\\
(1) 375\\
(2) 250\\
(3) 374\\
(4) 372