4 years ago .

How%20many%20integers%20between%202020%20and%202400%20have%20four%20distinct%20digits%20arranged%20in%20increasing%20order%3F%20

#digits #doyouknow #integers

How many integers between 2020 and 2400 have four distinct digits arranged in increasing order? (for example, 2357 is one such integer.)

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Published: December 16, 2020 06:15:17

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2345%2C%202346%2C%202347%2C%202348%2C%202349

2356%2C%202357%2C%202358%2C%202359

2367%2C%202368%2C%202369

2378%2C2379

2389

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#maths

How%20many%20integers%20between%202020%20and%202400%20have%20four%20distinct%20digits%20arranged%20in%20increasing%20order%3F%20

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