10ticks Friday Puzzle

This week's Friday Puzzle

Anne and Billy race over 100 m and Anne wins by 10 m.

They always run at the same rate.

In the next race the teacher starts Anne 11 m behind the start line.

Who will win and by what distance?

Friday Puzzle (15/09/2017)

A cuboid fish tank is tilted so the water is reaching the top edge and the midpoint of the base as shown.

What is the depth of the water in the tank when the tank is returned to a horizontal position?

Friday Puzzle (08/09/2017)

Only the numbers 1, 2, 3, and 4 are used.
Each row and column add to the number shown.
No numbers are repeated in any row or column.
Complete the grid.

Friday Puzzle (01/09/2017)

Two congruent equilateral triangles overlap so that the area of the overlap (shaded yellow) equals half of either of the other two areas.

Which is longer, AB or CB?

Friday Puzzle (25/08/2017)

From the box choose pairs of numbers that:

add up to 15,

add up to 25,

add up to 35,

add up to 45.

What is the odd number out?

Friday Puzzle (18/08/2017)

Each letter stands for a different digit.
So if A = 7 and B = 3,   AB would mean 73   and    A^B = 7 cubed.

If A^Y = IS, A^D = SA and (IS)^Y = YES, find the values for A, E, I, S, Y.

What is (YES)^Y ?

Hint: for the garden!

Friday Puzzle (11/08/2017)

8 can be written as the sum of two prime numbers.

8 = 3 + 5.

How many whole numbers less than 20 cannot be written as the sum of two prime numbers?

Friday Puzzle (21/07/2017)

Use 3D co-ordinates to find the distance between (1, 1, 1) and (4, 5, 13).

Friday Puzzle (14/07/2017)

47.5 + 3862.7 + 125.6 + 1583.1 = 45085.7

I got this wrong! When I did the calculation I forgot all about decimal places.

In fact the decimal point is only correct in one of the numbers.

Which one?

Friday Puzzle (07/07/2017)

Jolly good show. This is a capital question, what!

5 and 9 are the first two numbers like this. Find me another FOUR.

There are another fourteen.