There are a few ways of making twenty-four using just three identical digits, 8 + 8 + 8 is one way, can you find any of the others?
Hint: There is a very simple one using 2's.
22 + 2
(3 ^ 3) - 3
(3 ^ 3 = 3 to the power of 3 = 3 x 3 x 3)
4! - 4 + 4
(4! = 4 factorial = 4 x 3 x 2 x 1)
The local library decided to hand out some of its old books to its 1400 borrowers.
To each of the female borrowers they gave 6 books and to each male borrower they gave 4 books.
If only half of the females in town and three quarters of the males in town accepted the books, how many books were given away?
[Ref: ZNXG] © Kevin Stone
Hint: It didn't matter how many male or female borrowers there were.
Answer: 4200 books.
It doesn't matter how many female borrowers there were as 1/2 of the females accepted the books, and those that did accepted 6 books, which is 3 books per female on average.
Similarly it doesn't matter how many male borrowers there were as 3/4 of the males accepted 4 books each, which is again 3 books each.
So both the males and females accepted, on average, 3 books each. And 1400 * 3 = 4200. QED.
The International Women's Speed Skating championship was recently completed, however, the computer storing the results suffered from a power cut.
Using the following information, can you determine who finished where, their ages (18, 21, 24 and 28) and the colour they wore?
The youngest, who didn't wear blue, won the championship.
Jessica was three years younger than the person who wore red.
Katy performed well to finish in second place.
Lauren wore green and Mary was the oldest competitor.
The person who wore yellow was younger than Katy, whereas the person who came last was 21.
[Ref: ZSDO] © Kevin Stone
Lauren Green 18 - first
Katy Red 24 - second
Mary Blue 28 - third
Jessica Yellow 21 - last
Using the letters AAEEHHLLLLMMNNOOSSTT complete this grid. The grid reads the same across as down.
[Ref: ZKQK] © Kevin Stone
Can you find a country which crosses both the Equator and one of the two tropics?
Hint: Take a quick look at an atlas.