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The first four digit number is 1,000 So 1000 / 5 = 200 and 1000 /10 = 100
35 and 119.
The largest two-digit multiple of 5 is 95. This is because the multiples of 5 within the two-digit range start from 10 and go up to 95, with each multiple increasing by 5. The next multiple, 100, is a three-digit number, so 95 remains the largest two-digit multiple.
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.