Question

What is AM-CM inequality?

score 666 · Answer 1 · 2019-07-27 15:40:38

666

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What is AM-CM inequality?

Published on 27 Jul 2019 - 15:40

score 660 · Answer 2 · 2026-03-28 20:41:21

660

Views

What is the measure, in degrees, of $\angle BFC$?

Published on 28 Mar 2026 - 20:41

score 171 · Answer 3 · 2019-07-28 11:56:18

171

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A,B,C and D are four points on a circle in that cyclic order. If $AD=BD=50 \sqrt3 cm$, $AC=106.8cm$ and $∠CAD=30$, what is the length, in cm, of BC?

Published on 28 Jul 2019 - 11:56

score 1.7k · Answer 4 · 2019-07-28 22:57:10

1.7k

Views

How do you prepare for AIME?

Published on 28 Jul 2019 - 22:57

score 113 · Answer 5 · 2019-07-29 05:25:44

The probability that 2 sheeps selected randomly from the flock are from different barns is exactly $1/2$. Determine the value of $n$.

score 674 · Answer 6 · 2019-07-29 07:36:45

674

Views

Ten lockers are in a row. Each locker is to be painted either blue, red or green. In how many ways can the collection of lockers be painted?

Published on 29 Jul 2019 - 7:36

score 184 · Answer 7 · 2026-03-26 01:08:05

184

Views

In how may ways can we remove lines such that all dots will still be connected?

Published on 26 Mar 2026 - 1:08

score 86 · Answer 8 · 2019-07-29 22:51:58

86

Views

How many integers satisfy $(n-3)(n+1)=\phi(n)\cdot \sigma(n)$?

Published on 29 Jul 2019 - 22:51

score 84 · Answer 9 · 2026-03-29 19:16:31

84

Views

Help Needed with a Limit Problem (L' Hospital's Rule Failed)

Published on 29 Mar 2026 - 19:16

score 2k · Answer 10 · 2019-07-30 04:50:46

Given a grid of $m \times n$ squares in black and white. Given a rule, which grid sizes $m \times n$ (with $m,n \ge 3$) have a valid colouring?

score 61 · Answer 11 · 2019-07-30 10:55:46

61

Views

How would we calculate the answer to this simple counting game problem?

Published on 30 Jul 2019 - 10:55

score 887 · Answer 12 · 2019-07-30 13:06:31

887

Views

Squares of an $8\times8$ grid are coloured black or white. How many colourings of an $8\times8$ grid are there?

Published on 30 Jul 2019 - 13:06

score 993 · Answer 13 · 2026-03-28 22:08:23

993

Views

How to find all positive integers whose square ends in $444$?

Published on 28 Mar 2026 - 22:08

score 228 · Answer 14 · 2019-07-31 10:16:04

228

Views

Find numbers of the form $\frac{n(n+1)}{2}$ such that the digits of the number are all same

Published on 31 Jul 2019 - 10:16

score 173 · Answer 15 · 2026-03-30 17:38:35

173

Views

$~ \Delta~ ABC~$ is a triangle with altitudes from $~B~$ and $~C~$ meeting $~AC,~ AB~$ at $~E~$ & $~F~$.

Published on 30 Mar 2026 - 17:38

List Question

What is AM-CM inequality?

What is the measure, in degrees, of $\angle BFC$?

A,B,C and D are four points on a circle in that cyclic order. If $AD=BD=50 \sqrt3 cm$, $AC=106.8cm$ and $∠CAD=30$, what is the length, in cm, of BC?

How do you prepare for AIME?

The probability that 2 sheeps selected randomly from the flock are from different barns is exactly $1/2$. Determine the value of $n$.

Ten lockers are in a row. Each locker is to be painted either blue, red or green. In how many ways can the collection of lockers be painted?

In how may ways can we remove lines such that all dots will still be connected?

How many integers satisfy $(n-3)(n+1)=\phi(n)\cdot \sigma(n)$?

Help Needed with a Limit Problem (L' Hospital's Rule Failed)

Given a grid of $m \times n$ squares in black and white. Given a rule, which grid sizes $m \times n$ (with $m,n \ge 3$) have a valid colouring?

How would we calculate the answer to this simple counting game problem?

Squares of an $8\times8$ grid are coloured black or white. How many colourings of an $8\times8$ grid are there?

How to find all positive integers whose square ends in $444$?

Find numbers of the form $\frac{n(n+1)}{2}$ such that the digits of the number are all same

$~ \Delta~ ABC~$ is a triangle with altitudes from $~B~$ and $~C~$ meeting $~AC,~ AB~$ at $~E~$ & $~F~$.

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