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Raj
Lottery Math Permutation and Combination Question Help?????
Suppose that lottery is a draw of five numbers
from a group of 49, without replacement.
Matching three or more numbers allows you to
buy another lottery ticket.
What are the odds that you won’t win enough
money to at least recoup the cost of your ticket?
2 AnswersMathematics2 years agoMath word problem help. You are a genius if you solve this?
We often represent a musical scale as a sequence of 12 digits, either 0s or 1s. For a scale to be valid, the leading digit must be 1. 001100110011 is not a scale because it doesn’t start with a 1. 10 is not a scale, because it doesn’t have 12 digits. 120012001200 is not a scale because it uses digits other than 0 or 1. How many scales can exist in total? A pentatonic scale is a scale which has 5 notes in it, this being represented by the five instances of the digit 1 being present in the symbol string that describes the scale. How many pentatonic scales can exist? Some scales won’t sound good if given to a novice musician. Those scales are called hemitonic and have two 1s adjacent to each other. (We can say that there is a ’run’ of two ’1’ digits present in such a scale.) How many pentatonic hemitonic scales can exist? How many pentatonic without this property exist? Please note that there are many websites which answer this very question, from a musical theory viewpoint. However, those websites don’t consider some scales, by discarding scales which have large/long runs of 0s.
1 AnswerMathematics2 years agoSimple Permutation Question but I can't solve this, Help Please???
We often represent a musical scale as a sequence of 12 digits, either 0s or 1s. For a scale to be valid, the leading digit must be 1. 001100110011 is not a scale because it doesn’t start with a 1. 10 is not a scale, because it doesn’t have 12 digits. 120012001200 is not a scale because it uses digits other than 0 or 1. How many scales can exist in total? A pentatonic scale is a scale which has 5 notes in it, this being represented by the five instances of the digit 1 being present in the symbol string that describes the scale. How many pentatonic scales can exist? Some scales won’t sound good if given to a novice musician. Those scales are called hemitonic and have two 1s adjacent to each other. (We can say that there is a ’run’ of two ’1’ digits present in such a scale.) How many pentatonic hemitonic scales can exist? How many pentatonic without this property exist? Please note that there are many websites which answer this very question, from a musical theory viewpoint. However, those websites don’t consider some scales, by discarding scales which have large/long runs of 0s.
1 AnswerMathematics2 years agoPermutation and Combination Dinner Problem Help Please!!!!!!?
You are preparing soup for the whole family. You have 10 skirrets, 15 tomatoes, N onions and 3 cabbages. Dad must have a cabbage, but is otherwise not picky. Mom hates tomatoes, so she won’t have any of those. Granny dislikes skirrets, tomatoes and cabbages. You can eat anything. In how many ways can you prepare dinner for the four people in question, by distributing the veggies? You must give at minimum of one food item to everyone.How would the answer change if you had to give everyone at least two different vegetables?
2 AnswersMathematics2 years agoPermutation and Combination Password Question?
Let’s say that a company requires their employees
to adhere to the following rules when it comes to
choosing their password
1. The first character has to an uppercase letter.
2. The fourth character has to be a lowercase
letter.
3. The remaining six characters can be uppercase
letters, lowercase letters or digits.
How many valid passwords exist?
1 AnswerMathematics2 years ago
Combinatorics Question very hard. Confused Please help!!!!!?
1. It’s a common idea that problems which contain only numbers are easy. This problem only deals with specific numbers, and it isn’t easy.The last digit of the number 5432178 is 8. The last two digits of that number are 7 and 8. What are the last 300 digits of (300!)^300 ?
Hint : Take the
factorial of the number 300, raise it to the 300th power and find the rightmost 300 digits.
2 Question - There are 170 students in this class. There are 254 seats, as limited by the fire code. In how many ways can we fill the classroom? Let’s say that it takes us one minute to reseat
ourselves, that we will never repeat a seating arrangement,
that a year has exactly 52 weeks and
that we will be doing this for three hours a week. How many years would it take for us to try out all of the possible seating arrangements?
3 - Imagine that ten people in the class got sick with the cold. Further eight got a flu. One person caught malaria, somehow. Ten people dropped the class. Another six are just plain sick of the class. Finally, one last student became a “Crown Steward and Bailiff of the Chiltern Hundreds” in the United Kingdom and had to leave Canada. Sufficeto say, none of those people will be attending. How does this level of attrition change the answer to the previous question? How many years will it take now to try out all seating arrangements?
3rd question is the picture
1 AnswerMathematics2 years agoHELP WITH A PHYSICS QUESTION PLEASE!!!!!!!!?
Middle C on a musical scale has a frequency of 261.6 Hz (it gets its name from its position on the piano
keyboard). High C is two octaves above middle C and is considered to be at the top of the soprano vocal
range. Low C is two octaves below middle C and is considered to be at the bottom of the bass vocal
range.
a. If a bass singer is singing a low C note at the threshold of hearing, how much louder (in
decibels) must he sing than a soprano who is singing a high C note at the threshold of hearing?
b. What is the ratio of the intensity of the sound produced by the bass singer in this situation to
that of the soprano singer?
GIVEN THE SAME FIGURE AS THIS QUESTION:
1 AnswerPhysics2 years ago
