The first four digit number is 1,000 So 1000 / 5 = 200 and 1000 /10 = 100
35 and 119.
9000. The first digit can be any one of 1-9 (9 choices). The second digit can be any one of 0-9 (10 choices). The third digit can be any one of 0-9 (10 choices). The fourth digit can be any one of 0-9 (10 choices). So, in all, 9*10*10*10 = 9000
Zero. Any five consecutive natural numbers will contain at least one multiple of 2 and at least one multiple of 5, meaning that the product will be a multiple of 10.
64
It is zero.
The only positive two-digit multiple of 12 and 10 is 60.
Any multiple of 90 from 1080 to 9990.
Just multiply any whole number by 10, and you get a multiple of 10. Note that all multiples of 10 end with the digit zero.If you have one multiple of 10, you can add 10 to get the next one.
-3
18
You may have any number of digits, but your last digit must be ' 9 '.
-8
The first four digit number is 1,000 So 1000 / 5 = 200 and 1000 /10 = 100
35 and 119.
The first squared number that is a multiple of 10 is three digits.
9000. The first digit can be any one of 1-9 (9 choices). The second digit can be any one of 0-9 (10 choices). The third digit can be any one of 0-9 (10 choices). The fourth digit can be any one of 0-9 (10 choices). So, in all, 9*10*10*10 = 9000