All Questions ⁺⁰238062 Questions

0

1392

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Three couples go to the movie theater.

Three couples go to the movie theater. They want to seat people together for maximum enjoyment, but instead they randomly file into a row with six seats. What is the probability that they sit in a socially optimal configuration, in which each person is read more ..

Darkside Sep 3, 2018

0

1755

1

+296

What is the probability that a two-digit number .

What is the probability that a two-digit number selected at random has a tens digit less than its units digit? Express your answer as a common fraction.

Darkside Sep 3, 2018

0

1788

2

+296

My state's lottery has 30 white balls numbered from 1 through 30 and 20 red balls numbered from 1 through 20.

My state's lottery has 30 white balls numbered from 1 through 30 and 20 red balls numbered from 1 through 20. In each lottery drawing, 3 of the white balls and 2 of the red balls are drawn. To win, you must match all 3 white balls and both red balls, without read more ..

Darkside Sep 3, 2018

+1

2218

1

+296

A library has six identical copies of a certain book.

A library has six identical copies of a certain book. At any given time, some of these copies are at the library and some are checked out. How many different ways are there for some of the books to be in the library and the rest to be checked out if at read more ..

Darkside Sep 3, 2018

+1

907

1

+296

A library has six identical copies of a certain book.

A library has six identical copies of a certain book. At any given time, some of these copies are at the library and some are checked out. How many different ways are there for some of the books to be in the library and the rest to be checked out if at read more ..

Darkside Sep 3, 2018

+1

1666

1

+296

DARKSIDE

There are six clearly distinguishable frogs sitting in a row. Two are green, three are red, and one is blue. Green frogs refuse to sit next to the red frogs, for they are highly poisonous. In how many ways can the frogs be arranged?

Darkside Sep 3, 2018

+1

2919

1

+296

HELP

The perfect squares from 1 through 2500 inclusive, are printed in a sequence of digits 1491625.....2500 How many digits are in the sequence?

Darkside Sep 3, 2018

+2

1

3990

1

+296

In how many ways can 8 people be seated in a row of chairs if three of the people

In how many ways can 8 people be seated in a row of chairs if three of the people, John, Wilma and Paul, refuse to sit in three consecutive seats?

Darkside Sep 3, 2018

+1

747

1

+296

How many 4-letter words with at least one vowel can be constructed

How many 4-letter words with at least one vowel can be constructed from the letters A, B, C, D, and E? (Note that A and E are vowels, any word is valid, not just English language words, and letters may be used more than once.)

Darkside Sep 3, 2018

0

1214

2

+1246

help!

It took Lara five days to read a novel. Each day after the first day, Lara read half as many pages as the day before. If the novel was 248 pages long, how many pages did she read on the first day?

Lightning Sep 3, 2018

0

648

1

+1246

Help!

Sequence A is a geometric sequence. Sequence B is an arithmetic sequence. Each sequence stops as soon as one of its terms is greater than 300. What is the least positive difference between a number selected from sequence A and a number read more ..

Lightning Sep 3, 2018

-2

1443

1

+71

The volume (in cubic meters)(show work)

The volume (in cubic meters), V, of a rectangular room is given by the expression:
v = 7b^4-28
Where b is a positive integer and each dimension is a positive integer too. What are three unique expressions that could represent the read more ..

Mathrules Sep 3, 2018

0

2684

1

+4

counting question

Elodie is putting on a fashion show and has five fabulous outfits for her five fabulous fashion models. However, on the day of the show, two of the outfits were ruined in an unfortunate permanent marker incident. Regardless, the show must go on and the read more ..

Sombrero Sep 3, 2018

+1

1395

1

+847

proper

To express 20 as a sum of different powers of 2, we would write . The sum of the exponents of these powers is . If 400 were expressed as a sum of at least two distinct powers of 2, what would be the least possible sum of the exponents read more ..

ant101 Sep 3, 2018

0

1040

2

+655

Help

If x^2 + y^2 +1/2 = x + y, find x^y+y^x

If |x|=3x+1, find (64x^2+48x+9)^2018

supermanaccz Sep 3, 2018

Sep 2, 2018

+1

882

1

+87

help

Week 8, I believe (a) is 6, but not sure

read more ..

rrahh Sep 2, 2018

0

1175

3

Help asap

Compute the sum of
$$\frac{2}{1 \cdot 2 \cdot 3} + \frac{2}{2 \cdot 3 \cdot 4} + \frac{2}{3 \cdot 4 \cdot 5} + \cdots$$

Guest Sep 2, 2018

0

1441

1

Math Help

I want to choose a license plate which is 3 characters long, where the first character is a letter, the last character is a digit, and the middle is either a letter or a digit. I also want there to be two characters on my license plate which are the same. read more ..

Guest Sep 2, 2018

0

2087

1

Pls Help!!!!

Compute $1 - 2 + 3 - 4 + \dots + 2005 - 2006 + 2007$

Guest Sep 2, 2018

0

966

1

Find the measurment of both complemetary angles if one of them is 3 times less than the other

Find the measurment of both complemetary angles if one of them is 3 times less than the other

Guest Sep 2, 2018

0

590

0

+59

Help I keep getting these two wrong...

Help I keep getting these two wrong...

read more ..

slim22 Sep 2, 2018

0

556

0

+59

Help

slim22 Sep 2, 2018

0

775

0

+394

help with this formula

Use a formula to find the surface area of each polyhedron described.
(a) a rectangular prism that is 4 feet wide, as tall as it is wide, and twice as long as it is tall
_____ ft2
(b) a regular hexagonal read more ..

ladiikeiii Sep 2, 2018

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