Sunday Afternoon Maths XXIX

 Posted on 2014-09-21 

Double derivative

What is
(i) \(y=x\)
(ii) \(y=x^2\)
(iii) \(y=x^3\)
(iv) \(y=x^n\)
(v) \(y=e^x\)
(vi) \(y=\sin(x)\)?

Show answer & extension

Equal opportunity

Can two (six-sided) dice be weighted so that the probability of each of the numbers 2, 3, ..., 12 is the same?

Show answer & extension

Three squares

Source: Numberphile
The diagram shows three squares with diagonals drawn on and three angles labelled.
What is the value of \(\alpha+\beta+\gamma\)?

Show answer & extension

If you enjoyed these puzzles, check out Advent calendar 2019,
puzzles about percentages, or a random puzzle.


Show me a random puzzle
 Most recent collections 

Advent calendar 2019

Sunday Afternoon Maths LXVII

Coloured weights
Not Roman numerals

Advent calendar 2018

Sunday Afternoon Maths LXVI

Cryptic crossnumber #2

List of all puzzles


doubling lines 3d shapes logic unit fractions star numbers crossnumber hexagons mean rectangles circles wordplay sums elections functions products money colouring percentages squares square roots differentiation fractions scales speed perimeter factorials crosswords sum to infinity tiling complex numbers digital clocks remainders square numbers gerrymandering numbers shapes ave cube numbers surds routes integers partitions folding tube maps dominos polygons averages trigonometry bases chocolate addition integration arrows ellipses the only crossnumber sport multiples cards rugby graphs cryptic clues dates parabolas quadratics irreducible numbers pascal's triangle perfect numbers probabilty odd numbers dodecagons planes volume chalkdust crossnumber spheres range games balancing triangle numbers geometry shape prime numbers clocks symmetry probability christmas taxicab geometry angles factors books number advent area crossnumbers people maths floors time sequences median digits menace algebra division grids coordinates calculus regular shapes multiplication dice cryptic crossnumbers chess indices triangles 2d shapes coins means proportion palindromes


Show me a random puzzle
▼ show ▼
© Matthew Scroggs 2012–2020