On a very rainy day in London, Dr Watson takes an umbrella to visit Sherlock Holmes. From his position he can see the clock tower and the red bus, but he cannot see Holmes, who is following behind him carrying the green umbrella. What colour is Watson’s umbrella?
At the 2012 London Olympics, the USA won 46 gold, 29 silver and 29 bronze medals, while China won 38 gold, 27 silver and 23 bronze medals, according to the figures given here. How many more medals did the USA win?
To defeat a dragon, Mathias must cut off all its heads. Every time he cuts off three heads, one new head immediately grows. He defeats the dragon after cutting off 13 heads in total. How many heads did it have initially?
Albert fills a 5-by-5 grid using the five symbols shown: rhinoceros, shark, frog, ghost and flower. Every row and every column contains all five symbols. Which symbol belongs in the question-mark cell?
Andy, Betty, Cathie and Dannie were born in the same year, on 20 February, 12 April, 12 May and 25 May, in some order. Betty and Andy were born in the same month. Andy and Cathie share a day number but have different birth months. Who is oldest?
Eight farmers place apple baskets around the square as shown. The four earlier baskets contain 13,14,15,16 apples. The later baskets contain 11,12,17,19 apples, one count in each empty position. Every straight side of three baskets has the same total. How many apples are in the basket marked “?”?
Peter writes a digit on the board and then another digit immediately to its right. Adding 19 to the resulting number gives 72. What was the first digit he wrote?
Twenty sweets are distributed among some kangaroos. Each receives at least one sweet, and no two receive the same number. What is the largest possible number of kangaroos?
Martina leaves home at 6:55 a.m. and reaches school at 7:32 a.m. Dasa reaches school at 7:45 a.m., and her journey takes 12 minutes less than Martina’s. At what time does Dasa leave home?
Tom draws a shark, a cat and a rhinoceros on three small sheets, as shown. He makes special animals by joining a chosen head, body and tail from these drawings. How many different animals can he make?
Joe wants to buy basketballs. Buying five leaves him 10 coins; buying seven would require him to borrow another 22 coins. How many coins does one ball cost?