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222 pounds is 15.9 stone.
222%
222
How many strings of three digits are there? 000 to 999, or a total of 1000. How many strings of three digits contain the same three digits? That's 000, 111, 222 ... 999! ten in total. The difference is your answer: 1000-10 = 990.
Probably 990, depending on the rules. Fun question, but there is more than one answer depending on the rules. If the first digit can be zero, and if you can accept 001, 002, etcetera as answers, then you have 10 choices for the first digit, 10 choices for the second digit, and 10 choices for the third digit. But, you have to subtract the ten occurrences when all three digits match (000, 111, 222, 333, etc.) 10 x 10 x 10 - 10 = 990.