The sum of the digits of m is 9*2001=18009
The sum of the digits of n is 8*2001= 16008
We have 1+8+0+0+9=18
1+6+0+0+8=15
18*15= 270
=> the sum of the digits in the value of m*n is 2+7+0 =9
nhầm sửa lại thành tổng các chữ số là 27
The sum of the digits of m is 9*2001=18009
The sum of the digits of n is 8*2001= 16008
We have 1+8+0+0+9=18
1+6+0+0+8=15
18*15= 270
=> the sum of the digits in the value of m*n is 2+7+0 =9
nhầm sửa lại thành tổng các chữ số là 27
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Consider the set of the first one hundred natural numbers {0,1,2,3,…,99}. Let k be the sum of digits of a number in the set. Find the value of k such that the number of numbers whose digits add up to the same value is a maximum.
ai kb và tick cho nick KAITO KID 2005 + trả lời đúng câu hỏi này thì mình tick cho:
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A 4 - digits numbers divisible by all of the numbers from 1 to 10 without any remainder. Find the smallest possible value of the 4-digits number
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