hernandezadelia hernandezadelia

22-12-2016
Mathematics

contestada

how many 4 digit passcodes are possible if no digits are repeated

Respuesta :

apologiabiology apologiabiology

22-12-2016

10 numbers
4 parts

1st slot: 10 choices
2nd slot: 9 choies (1 less than 10)
3rd slot: 8 choies (1 less than 9)
4th slot: 7 choices (1 less than 8)

10*9*8*7=5040

answer is 5040 codes

Answer Link

Otras preguntas

Malnutrition occurs when what someone needs to eat is very different from what they actually eat. The usual way of measuring malnutrition is to look at three di

How many moles of sulphur dioxide are produced when 72.0 grams of water is produced by the process: 2H2S + 3O2 --> 2H2O + 2SO2

Why was the Rape of Nanjing significant? a. Over 100,000 people were massacred. b. It was a direct act of manipulation and terrorism. c. The United States be

Give two examples of service business

Who benefited more from the ideas of social Darwinism, business leaders or workers?

CD= 9 CM AB=? Thanks

My son hasn't knows how to do that can somebody help him please .

What is the difference between Boxer and Clover? A Boxer is an independent thinker, while Clover accepts everything she it told without question. B Boxer is res

How many groups of 12 are in 600

Under Franklin Roosevelt's Good Neighbor policy, A. the Platt Amendment was rescinded. B. American commerce with Latin America increased, but only slightly. C.