Question

1 Sam is asked to determine the total ways in which he can obtain a positive number less than a million using digits. 3,6,0.
a)6074
b)1428
c)728
d)486​

Answer 1

Answer:

c) 728

Step-by-step explanation:

Concept- Permutation and Combination

Given- Digits and combination

To find- Total ways

Explanation-

The total number of ways in which a positive number can be formed less than million from 0,3,6 will be as follows

We can not begin the first position with 0 because then it will not be less than million so,

Ways of 6 digits= 2*3*3*3*3*3=486

Ways of 5 digit=2*3*3*3*3=162

Ways of 4 digit=2*3*3*3=54

Ways of 3 digit=2*3*3=18

Ways of 2 digit=2*3=6

Ways of 1 digit= 2

Total Ways = 486+162+54+18+6+2=728.

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