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4 votes
1 answer
2k views

Ice cream cone height

4 votes
1 answer
501 views

Can an 8×8 square be tiled with these smaller squares?

4 votes
5 answers
10k views

Tribonacci Sequence Term

4 votes
4 answers
310 views

Proof of Implicit Differentiation (showing a statement is true)

3 votes
1 answer
624 views

Number of square pieces

3 votes
3 answers
319 views

How to add powers?

3 votes
4 answers
3k views

If $5P+7Q= 109$ for primes $P$ and $Q$, find $P$.

3 votes
2 answers
4k views

Inscribed Square in Inscribed Circle in Square

2 votes
1 answer
2k views

Squares with Prime Factors

2 votes
1 answer
2k views

Tile Edge Challenge

2 votes
3 answers
4k views

How many 5 digit numbers contain all the digits 1,2,3,4,5 and have the property that each pair of adjacent digits has a difference of at least 2?

2 votes
5 answers
9k views

What is the largest 3-digit number which has all 3 digits different and is equal to 37 times the sum of it's digits?

1 vote
2 answers
4k views

How many squares does the diagonal of this rectangle go through?

1 vote
3 answers
317 views

Location of vertex of triangle on Cartesian plane

1 vote
1 answer
826 views

What is the number of people that could NOT be standing on this line?

1 vote
4 answers
268 views

Filling large and small jugs of water from 50L

1 vote
1 answer
30 views

Rectilinear Motion - Proof

1 vote
1 answer
759 views

Rings of Rhombuses

1 vote
1 answer
1k views

How to make Wolfram Alpha give me a range of possible answers for an equation if the subject is assumed to be an integer?

1 vote
1 answer
746 views

Shower Head Jet Separation

1 vote
2 answers
177 views

Kids on a $45$-seat bus

1 vote
1 answer
45 views

Pentagons with specific angles.

0 votes
1 answer
50 views

Diving- Another Way of Scoring

0 votes
1 answer
71 views

Unknown Race distances

0 votes
2 answers
555 views

Right-angled triangle ABC

0 votes
2 answers
1k views

How to solve the equation $5\sin x=12\cos x$?

0 votes
2 answers
63 views

Overpaying your bill

0 votes
3 answers
99 views

Ages and multiples

0 votes
3 answers
249 views

Strategy to solve 'Insert Brackets' questions

0 votes
3 answers
49 views

Multiplying fractions up to 2017