Question

using four different digits is 1.0.9 2. Write the following numerals in words. (b) 3940 (c) 9700 (d) 6019 (1) 5803 (g) 7001 (h) 1011 (3) 5470​

Answer 1

Step-by-step explanation:

We have to form 9-digit number with the digit 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0 cannot be placed at the first place from left. So, first place from left can be filled in 9 ways. <br> Since, repetition is not allowed, so remaining 8 places can be filled in

ways. <br>

Required number of ways

Answer 2

Step-by-step explanation:

we have to form 9 digit number with the digit 0,1,2,3,4,5,6,7,8,9.0 cannot be placed at the first place from left . so first place from left can be filled in 9 . since,

repeattation is not allowed. so,remaining 8 places can be filled in many ways