how many five doght numbers can be formed using the digts 0,2,3,4,and 5. when repetition is allowed such the number formed is divisible by 2 or 5 or both.
ans. choices are:
100
150
3125
1500
125
Proceed as in the previous problem.
4*5*5*5*4.
First 4 excludes 0 for a 5-digit number.
Last 4 excludes 3, which is not divisible by 2 or 5.
However, unless I am mistaken or if there is a typo, I do not find the value 2000 from the list of answers.