10ticks Friday Puzzle
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!
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This week's Friday Puzzle
By adding plus signs between the numbers 9 8 7 6 5 4 3 2 1 make 99 in two different ways!
Friday Puzzle (04/10/2019)
8000 is 20^3.
It is also the sum of four consecutive cubic numbers.
Find these four cubic numbers.
Friday Puzzle (27/09/2019)
How can you ADD eight 8s to get the number 1000?
Friday Puzzle (20/09/2019)
Replace letters with digits so the sum is true.
There are quite a few solutions.
Friday Puzzle (13/09/2019)
What is the smallest prime number that will divide exactly into
3333 + 7777 ?
Friday Puzzle (06/09/2019)
How many whole numbers between (and including) 1 and 300 are NOT divisible by 3 nor by 5?
Friday Puzzle (26/07/2019)
Five different whole numbers have a median and mean of 6 and a range of 8. Three of the numbers are prime.
What are the five numbers?
Friday Puzzle (19/07/2019)
I have between 300 and 400 seeds to plant.
If I plant them in in rows of 24 there are 17 seeds left over.
If I plant them in rows of 15 there are 2 seeds left over.
What length of rows could I plant the seeds so there are none left over?
Friday Puzzle (12/07/2019)
In the World Cup, a cricketer’s average after the first 5 innings was 23.2 runs.
After a further 4 innings his average increased to 42 runs.
What was his average for the last 4 innings?
Friday Puzzle (05/07/2019)
Farmer Paul has a grassy field. It can feed one cow for 5 days or one goat for 20 days.
If Farmer Paul puts one cow and one goat in the field, how long would the grass last?
(The grass won’t grow back!)