Can you work out the domino pieces which would go in the middle
in each case to complete the pattern of these eight sets of 3
Use the information about the ducks on a particular farm to find
out which of the statements about them must be true. My two
digit number is special because adding the sum of its digits to
the product of its digits gives me my original number. What
could my number be? If you wrote all the possible four digit
numbers made by using each of the digits 2, 4, 5, 7 once, what
would they add up to? A rhombus PQRS has an angle of 72 degrees.
OQ = OR = OS = 1 unit. Find all the angles, show that POR is a
straight line and that the side of the rhombus is equal to the
Golden Ratio. The problem is how did Archimedes calculate the
lengths of the sides of the polygons which needed him to be able
to calculate square roots? Four cards are shuffled and placed
into two piles of two. Starting with the first pile of cards -
turn a card over... You win if all your cards end up in the
trays before you run o