logic puzzles, riddles and math puzzles - pzzls | grandfather's birthday puzzle

pzzls menu

- main page

- newest puzzles

Sections

- logic puzzles

- math puzzles

- science puzzles

- puzzling puzzles

- all puzzles

Others

- search puzzle

- pzzls link collection

- mail to pzzls

- your puzzle at pzzls

pzzls links

welcome to pzzls

On this site you'll find lots of logic puzzles and riddles, puzzling riddles,
science puzzles and math puzzles and riddles.

Answers and detailed solutions are included.

Do you know other nice brain teasers, riddles or puzzles that should be on the site?
If that's the case, send a message to pzzls!

math puzzle

Grandfather's birthday

More than twenty years ago, Tim asked his grandfather who was celebrating his birthday that day: "How old are you now?" Grandfather smiled and said: "Add the digits of my year of birth and multiply the answer by 4." Tim would have looked so uncomfortable that his Grandfather immediately added, "By the way, this trick also works with the year we have on the calendar now." What was grandfathers age?

mail puzzle

rating 2.3/5

answer - solution

puzzle top 10

1.	Einstein's riddle	logic puzzle	rating: 3.8/5


2.	Lockers	math puzzle	rating: 3.6/5


3.	Divisible from 1 to 9	math puzzle	rating: 3.6/5


4.	Lost your way	logic puzzle	rating: 3.5/5


5.	Find the way to freedom	logic puzzle	rating: 3.5/5


6.	The superstitious president	logic puzzle	rating: 3.4/5


7.	Dots and lines	logic puzzle	rating: 3.4/5


8.	Address unknown	logic puzzle	rating: 3.4/5


9.	Straight line sum	math puzzle	rating: 3.3/5


10.	Bob and John	math puzzle	rating: 3.3/5

Last changed 16-01-2010