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M.A.

Questions and answers by M.A.

Questions (43)

I have filled in an Excel spreadsheet.On the far left column are itemized numbers from 1-619. When I print the document, the far
1. 2 answers
2. 902 views
I went to File/Print Area and selected Clear Print Area. Then I went to File/Print Preview and the far left column of itemized
1. 4 answers
2. 409 views
How many numbers are in the string57, 59, 61, 63,...1233? My friend calculated 588. I am too concrete in my thinking and did it
1. 9 answers
2. 518 views
A number of bacteria are placed in a glass. One second later each bacterium divides in two, the next second each of the
1. 4 answers
2. 1,582 views
Two questions:(1) In a class every boy is friends with exactly 3 girls. Every girl is friends with exactly 2 boys. There are
1. 5 answers
2. 923 views
The road connecting two mountain villages goes only uphill or downhill. A bus always travels 15 mph uphill and 30 mph downhill.
1. 2 answers
2. 593 views
What is the next logical number in the following number sequence? and Why?5, 8, 14, 26
1. 10 answers
2. 6,133 views
Mary had some M&M candy. She ate one, then gave half of the remaining candy to Bill. She ate another candy, then gave 1/3 of the
1. 7 answers
2. 463 views
Tom and Fred are inseparable twins. They are in a five-person club. How many ways can these five line up for a photo if Tom and
1. 2 answers
2. 590 views
How many times does the number "9" appear in the page numbers of a 100-page newspaper? Choose fromthe possible answers below. (
1. 5 answers
2. 568 views
A landscaper dug holes. It takes him 1 hour to dig a hole 2 feet deep, 2 feet long and 2 feet wide. Assuming everything remains
1. 6 answers
2. 698 views
Kurt has a number of turkeys to give out to needy people and is going to have two friends help him. Alex received half of the
1. 1 answer
2. 475 views
How many people do you need in a room in order to guarantee that there is a pair of people who were born in the same month?Choos
1. 6 answers
2. 417 views
Four students fall asleep during class and, while asleep, the professor rearranges their notebooks so that when they wake up,
1. 5 answers
2. 519 views
How many people do you need in a room in order to guarantee that there's a group of three people, each of whom has the same
1. 1 answer
2. 396 views
A cylindrical can holds three equal-sized balls perfectly. Which is larger, the can's height or the can's circumference?Height
1. 1 answer
2. 475 views
A group of five students needs to break into two smaller groups in order to tackle the two different assignments associated with
1. 3 answers
2. 726 views
I have no clue as to how to tackle this problem.Two standard six-sided dice are rolled. The product of their outcomes is
1. 3 answers
2. 496 views
Three regular six-sided dice are tossed in succession. What is the probability that all three outcomes are different?Choose from
1. 1 answer
2. 483 views
Is it possible to put 44 marbles into 10 boxes in such a way that each box has a different number of marbles?Answer: yes no
1. 1 answer
2. 417 views
If the sides of a box all double in length, by how much does its volume increase?By a factor of 2 By a factor of 4 By a factor
1. 3 answers
2. 645 views
After three tosses of a fair die, which is more likely to come up: three distinct digits (e.g. 1,2,3), or three digits with at
1. 3 answers
2. 1,087 views
A crate's weight is 4 pounds more than one-third its weight. How many pounds does it weigh?2 3 4 6 Explain.
1. 1 answer
2. 371 views
Help! I pushed the wrong key, I guess.I think I clicked on the cursor when it was at the "measure bar at the top of the page
1. 2 answers
2. 546 views
A weighted coin has the property that the Heads comes up 60 percent of the time. On two flips of the coin, is it more likely
1. 2 answers
2. 957 views
The sum of the first X consecutive even numbers is 930. Find X.10 35 30 41 Explain your solution.
1. 2 answers
2. 733 views
The digits of a two-digit number are reversed. When both these two-digit numbers are added, the result is 88, and when
1. 3 answers
2. 1,174 views
Suppose T is a right triangle whose sides have lengths a, b, and c. Is it possible that each of a, b, and c is an odd integer?Ye
1. 2 answers
2. 559 views
How many ways are there to choose a three-digit lottery number? Note that numbers like 003, 014, 222, 232 or 123 are all
1. 1 answer
2. 420 views
Here's the latest from the UMW math department: Andy drove from Richmond to Boston at an average speed of 50 miles per hour. If
1. 2 answers
2. 901 views
A 9 percent salt-water solution is mixed with 4 ounces of an 18 percent salt-water solution in order to obtain a 15 percent
1. 2 answers
2. 555 views
Andy and Kate are running around a 400-meter track. If they run in the same direction, Andy will pass Kate in 100 seconds. If
1. 7 answers
2. 755 views
Bill likes pepperoni pizza, and Howard like sausage pizza. Both are willing to eat pizza with sausage and pepperoni both. They
1. 3 answers
2. 717 views
Suppose that Bill orders 8 pizzas, each with pepperoni (and possibly other toppings as well), and Howard orders 6 pizzas, each
1. 3 answers
2. 608 views
Suppose that Bill orders 8 pizzas, each with pepperoni (and possibly other toppings as well), and Howard orders 6 pizzas, each
1. 1 answer
2. 1,079 views
Suppose that Bill orders 8 pizzas, each with pepperoni (and possibly other toppings as well), and Howard orders 6 pizzas, each
1. 1 answer
2. 485 views
Andy and William work together to build a toy house. It will take William 5 hours and Andy 4 hours, or William 10 hours and Andy
1. 3 answers
2. 511 views
In the U.S., we often write dates such as July 4, 1776, as 7/4/76. In other countries, the month is given second and the same
1. 4 answers
2. 494 views
You type four letters to four different people and address the envelopes. If you then insert the letters into the envelopes
1. 1 answer
2. 1,131 views
You type four letters to four different people and address the envelopes. If you then insert the letters into the envelopes
1. 1 answer
2. 403 views
You type four letters to four different people and address the envelopes. If you then insert the letters into the envelopes
1. 1 answer
2. 427 views
You type four letters to four different people and address the envelopes. If you then insert the letters into the envelopes
1. 1 answer
2. 431 views
The Main Hall on the college campus has four main levels, from the basement up to the third floor. The technology staff in the
1. 2 answers
2. 643 views

Answers (20)

Thank you soo much for your help. We lived in Winnipeg for 2 1/2 years. It was a great experience, but gave us a new respect for 30 degrees below zero winters. Having come from the deep south it was a huge adjustment. Now living again in the deep south
Thank you Dr. Russ. I am so thrilled with your answer. It is the first time I have had an answer that I can truly understand and comprehend, being a math-challenged individual. Thank you sooo much for your careful and complete explanation!
Thank you, Dr. Reiny!
Thank you for clarifying. You are dealing with a dense old lady this morning.
There is something wrong either with the problem or with the answer. The answer must be only one number. It cannot be 4 miles per second AND 6 miles per second. Explain, please.
thank you, Mr. Reiny.
But if one dice has a 6 face up and the other dice has a 1 face up, isn't that a product of 7?
Thank you!
I finally understand! Thanks for your explanation to this dense logic.
The question does not say that each person would have a different birthday month. I could invite 12 people to a party and there might be only 7 months represented for birthday months. Should I assume the question is limited by assuming each person to have
Thank you Dr. Reiny.
I am confused. You said in your first statement that his rate is 9 cubic feet/hour. But you also state that he can dig 8 cubic feet in 1 hour. I am assuming that if he can dig 8 cubic feet in 1 hour that it would take him 8 hours to dig 64 cubic feet. (64
Oh how simple! Thank you!
Thank you. I can follow the solution quite easily as explained, but I could never have come up with the solution from scratch other than just starting with numbers and trial and error. So how do you begin such a problem?
I understand it now. When the differences between the numbers doubles each time, then I add 24 to the final number of 26 = 50. Thanks so much for helping this mathematically challenged person!
I thought 24 would be the next number in the sequence, but I am being given a list of numbers, one of which is the correct answer. The choices of the correct answer are: 38, 40, 41, or 50
What is the answer and solution to #1?
In doing the Excel list, my column A589 has the number 1177 listed. In checking the list of real numbers again, I have found another major error. Thank you so much for your patient help in working with this mathematically challenged individual.But at least
I have actually printed out all of the numbers "57, 59, 61,63, all the way to 1233". There are 619 numbers. I double checked for errors that all of the numbers were correct. There are actually 619 numbers, for real. The mathematical formula you used does
How Cool!! It works! You are a lifesaver. Thanks. M.A.

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