sjcowboywife sjcowboywife

16-05-2017
Mathematics

contestada

how many 7-digit phone numbers can be formed if the first digit cannot be zero and no digit can be repeated

Respuesta :

Аноним Аноним

16-05-2017

8 * 9 * 8 * 7 * 6 * 5 * 4

Answer Link

16-05-2017

If the first digit can not be 0 or 1, then there are 8 choices for the first digit. The other 6 have no restrictions, so there are 10 choices for each of those. 8⋅1000000

Answer Link

Otras preguntas

Round the number 3,250.0883 to the nearest hundredth

Atoms always have a charge of?

One difference between weather and climate

Young animals approaching maturity might do which of the following to find mates or establish new territories? A. Exponential growth B. Logistic growth C. Emi

Which government decision would best be handled at the state level

Did Montesquieu think a good way to make laws is for all the people to directly vote on them

in what way are plants in a sunny meadow and sulfur bacteria in a deep sea vent alike

Which of the following characteristics does not apply to film music? magnifies the emotion of a scene fill dead spots in the action help set the mood for a sce

The main character of a short story is properly called the

which statement is true about macromolecules? a. simple sugars are made of polysaccharides. b. glycerol is made of fatty acids. proteins are made of amino acids