10ticks Friday Puzzle

About us

Welcome to Ian’s Friday Puzzle! Dust off those Friday cobwebs with a little manipulation of the old grey matter. Perplexing puzzles, logical, illogical, and sometimes just plain stupid. Be prepared to be bewildered, befuddled and bedazzled!

See the latest Friday Puzzle below and look at all the past puzzles. Get the Friday Puzzle straight to your phone, follow us on Twitter. The first 5 correct answers join our Hall of Fame!

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?

Show answer

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.

fishtank

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

Show answer

Friday Puzzle (08/09/2017)

open grid

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.

Show answer

Friday Puzzle (01/09/2017)

twotriangles

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?

Show answer

Friday Puzzle (25/08/2017)

table of numbers

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?

Show answer

Friday Puzzle (18/08/2017)

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

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

What is (YES)Y ?

Hint: for the garden!

Show answer

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?

Show answer

Friday Puzzle (21/07/2017)

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

Show answer

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?

Show answer

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.

Show answer
10ticks UK Website 10ticks Australia Website 10ticks Malaysia Website 10ticks South Africa Website 10ticks India Website

All contents ©Fisher Educational Ltd 2002. All rights reserved. 10ticks.co.uk is the trading name and Registered trade mark of Fisher Educational Ltd. Registered in England No. 3668099