TeEvalyn865 TeEvalyn865
  • 20-03-2018
  • Mathematics
contestada

How many 12-digit decimal sequences are there that start and end with a sequence of at least two 3s?

Respuesta :

LammettHash
LammettHash LammettHash
  • 20-03-2018
Four positions of such a sequence are given to be 3s, and we have 10 choices for the remaining eight positions. So the number of such sequences is

[tex]1^4\cdot10^8=10^8=100,000,000[/tex]

or 100 million.
Answer Link

Otras preguntas

What are the 3 major movements of ocean water ?
why did Russian settlers come to California in the early 1800s
what is the square root of 600?
Bicarbonate ion is an example of a a. an acid b. a base c. an acidic salt d. a basic salt e. an amphoteric substance
what is the square root of 600?
what is 0.6 of 120 really hard and i need an answer for today
The speed of light is about 3.00 × 105 km/s. It takes approximately 1.28 seconds for light reflected from the moon to reach Earth. What is the average distance
which structure is correctly paired with its function? 1) ovary - provided milk for newborns 2) testis - development of sperm 3) placenta- storage of released
Im not sure with my homework the question is:describe ancient egypt's major river, using the words delta and cataract. Any help please?
The change in heat energy for a reaction is best expressed as a change in a. Enthalpy (H) b. Absolute temperature (T) c. Specific heat (c) d. Entropy (S) e