Register
Login
Username
Password
Login
forgot your password?
Home
Forum
+0
Formulary
Maths
Help
Complex Numbers
Integral Calculus
Differential Calculus
Equations
Graphs
Linear Algebra
Number theory
Percent
Standard Functions
Statistics
Trigonometry
Unit Conversion
Units
About
Imprint
Privacy Policy
Terms of Service
Credits
Google+
Facebook
Contact Email
Post New Question
All Questions
+0
235282 Questions
0
1
1
+185
Number Theory
You have a total supply of $1000$ pieces of candy, and an empty vat. You also have a machine that can add exactly $5$ pieces of candy per scoop to the vat, and another machine that can remove exactly $3$ pieces of candy with a different scoop from
read more ..
●
MEMEG0D
Oct 14, 2024
0
2
0
+192
Number Theory
A positive integer is called terrific if it has exactly $10$ positive divisors. What is the smallest number of primes that could divide a terrific positive integer?
BRAlNBOLT
Oct 14, 2024
0
2
0
+192
Number Theory
A positive integer is called terrific if it has exactly $10$ positive divisors. What is the largest number of primes that could divide a terrific positive integer?
BRAlNBOLT
Oct 14, 2024
0
1
0
+192
Number Theory
A positive integer is called terrific if it has exactly $10$ positive divisors. What is the smallest terrific positive integer?
BRAlNBOLT
Oct 14, 2024
+1
1
4
+5
Precalcus help!
Find the smallest positive solution to
in radians.
●
●
●
●
California
Oct 14, 2024
0
1
1
+274
Number Theory
A positive integer is called nice if it is a multiple of $8.$
A certain nice positive integer $n$ has exactly $9$ positive divisors. How many prime numbers are divisors of $n?$
●
nathanl6656
Oct 14, 2024
0
1
1
+274
Number Theory
A positive integer is called nice if it is a multiple of $8.$
A certain nice positive integer $n$ has exactly $9$ positive divisors. What is the smallest possible value of $n?$
●
nathanl6656
Oct 14, 2024
0
1
0
+274
Number Theory
Find the $4000$th digit following the decimal point in the expansion of $\frac{1}{17}$.
Be sure to include complete explanations with your answer, using complete sentences. Imagine you were going to show your solution to a classmate,
read more ..
nathanl6656
Oct 14, 2024
0
1
0
+167
Number Theory
For a positive integer $n$, $\phi(n)$ denotes the number of positive integers less than or equal to $n$ that are relatively prime to $n$.
What is $\phi(1200)$?
bIueb3rry
Oct 14, 2024
0
1
1
+167
Number Theory
For a positive integer $n$, $\phi(n)$ denotes the number of positive integers less than or equal to $n$ that are relatively prime to $n$.
What is $\phi(191)$?
●
bIueb3rry
Oct 14, 2024
0
1
2
+167
Number Theory
The number $100$ has four perfect square divisors, namely $1,$ $4,$ $25,$ and $100.$
What is the smallest positive integer that has exactly $2$ perfect square divisors?
●
●
bIueb3rry
Oct 14, 2024
Oct 13, 2024
0
1
3
+13
PLEASE HELP
A circular table is pushed into a corner of the room, where two walls meet at a right angle. A point P on the edge of the table (as shown below) has a distance of 8 from one wall, and
read more ..
●
●
●
tomorspain
Oct 13, 2024
0
1
1
+818
Counting
I have $3$ different mathematics textbooks, $2$ different psychology textbooks, and $2$ different chemistry textbooks. In how many ways can I place the $7$ textbooks on a bookshelf, in a row?
●
eramsby1O1O
Oct 13, 2024
0
2
0
+818
Counting
Each square below is to be colored either red, yellow, or blue, so that no two consecutive squares have the same color. How many ways are there to color the squares?
There is a grid of 4 by 5 squares.
eramsby1O1O
Oct 13, 2024
0
1
0
+818
Counting
Find the number of positive integers that satisfy both the following conditions:
Each digit is a 1 or a 3.
The sum of the digits is 5.
eramsby1O1O
Oct 13, 2024
0
1
0
+167
Geometry
In triangle $ABC,$ $\angle B = 90^\circ.$ Point $X$ is on $\overline{AC}$ such that $\angle BXA = 90^\circ,$ $BC = 15,$ and $CX = 5$. What is $BX$?
bIueb3rry
Oct 13, 2024
0
2
0
+167
Geometry
In triangle $ABC$, point $D$ is on side $\overline{AC}$ such that line segment $\overline{BD}$ bisects $\angle ABC$. If $\angle A = 45^\circ$, $\angle C = 45^\circ$, and $AC = 12$, then find the area of triangle $ABD$.
bIueb3rry
Oct 13, 2024
0
1
1
+1234
Algebra
Let
f(x) = \sqrt{x - \sqrt{x}}.
Find the largest three-digit value of $x$ such that $f(x)$ is an integer.
●
Akhain1
Oct 13, 2024
0
1
1
+1234
Algebra
Evaluate $a^3 - \dfrac{1}{a^3}$ if $a - \dfrac{1}{a} = 0$.
●
Akhain1
Oct 13, 2024
0
2
0
+1234
Algebra
Let $a_1,$ $a_2,$ $a_3,$ $\dots$ be a sequence. If
\[a_n = a_{n - 1} + a_{n - 2}\]
for all $n \ge 3,$ and $a_{11} = 1$ and $a_{10} = 4,$ then find $a_6.$
Akhain1
Oct 13, 2024
0
1
0
+645
Algebra
What are the coordinates of the points where the graphs of f(x)=x^3 + x^2 - 3x + 5 and g(x) = x^3 + 2x^2 intersect?
Give your answer as a list of points separated by commas, with the points ordered such that their -coordinates
read more ..
gnistory
Oct 13, 2024
+1
1
1
+645
Algebra
Simplify \dfrac{1}{\sqrt2+sqrt3}+\dfrac{1}{\sqrt2-sqrt3}.
●
gnistory
Oct 13, 2024
0
1
0
+645
Algebra
Find all ordered pairs x, y of real numbers such that x+y=10 and x^2+y^2=64.
For example, to enter the solutions (2, 4) and (-3, 9), you would enter "(2,4),(-3,9)" (without the quotation marks).
gnistory
Oct 13, 2024
«
latest
9410
9409
..
9404
9403
9402
9401
9400
..
2
1
»
Post New Question
5 Online Users
Top Users
+118665
Melody
moderator
+37128
ElectricPavlov
+33655
Alan
moderator
+14991
asinus
moderator
+9673
MaxWong
+5265
rarinstraw1195
+3146
admin
administrator
+2653
LiIIiam0216
+2489
GingerAle
+1911
tomtom
+1876
NotThatSmart
Sticky Topics
Some guidelines for question askers.
What is Happening 5
Again a number puzzle. Multiply in writing.
Loads of fun printable number and logic puzzles
¤¤¤¤Welcome To Web2.0calc¤¤¤¤
How to display latex properly
Feature Questions 1 - Started 8th May 19
How to upload a picture.
If a question is ticked that does not mean you cannot continue it.
Should you consider anything before you answer a question?
Geometry Thread
PUZZLES
LaTex Coding
/calculator/bsh9ex1zxj
Historical post!
What is happening? Wrap #4
Great Questions to Learn From 2
Great Answers to Learn From
Reference Material
Information for new people.