An arm and a leg

If 60% of people have lost an eye, 75% an ear, 80% an arm and 85% a leg, what is the least percentage of people that have lost all four?

Show answer

Shooting hoops

Source: Alex Bolton
You spend an afternoon practising throwing a basketball through a hoop.
One hour into the afternoon, you have scored less than 75% of your shots. At the end of the afternoon, you have score more than 75% of your shots.
Is there a point in the afternoon when you had scored exactly 75% of your shots?

Show answer & extension


Show me a random puzzle
 Most recent collections 

Advent calendar 2020

Advent calendar 2019

Sunday Afternoon Maths LXVII

Coloured weights
Not Roman numerals

Advent calendar 2018

List of all puzzles


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


Show me a random puzzle
▼ show ▼
© Matthew Scroggs 2012–2021