Math, asked by falakkhann, 9 months ago

how may string of four decimal digits do not contain the same digits

Answers

Answered by ItzSecretBoy01

Answer:

So that is 37 different combinations. Now 37 * 10 different digits = 370 ways to make a digit appear at least 3 times. Therefore, 10,000 - 370 = 9630 4 digit numbers where the same digit does not appear 3 times.

Answered by ghazala162004

So that is 37 different combinations. Now 37 * 10 different digits = 370 ways to make a digit appear at least 3 times. Therefore, 10,000 - 370 = 9630 4 digit numbers where the same digit does not appear 3 times

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how may string of four decimal digits do not contain the same digits​

Answers

So that is 37 different combinations. Now 37 * 10 different digits = 370 ways to make a digit appear at least 3 times. Therefore, 10,000 - 370 = 9630 4 digit numbers where the same digit does not appear 3 times

how may string of four decimal digits do not contain the same digits