The Ten Gallon Hat
Fill A 2.
Pour 4 gallons into B 3. 5 gallons remain in A 4. Empty B 5. Refill
B from A-this leaves 1 gallon in A 6. Empty B and put the 1 gallon
from A into B 7. Refill A 8. Fill B from A. This will take 3 gallons,
leaving 6 in A
Golf Bal Caper
5:59 - Because each minute, the number of balls double!
ended up with $90.
he had was: $60 + $10 from his wife == $70.
$90 - $70
= $20 dollars profit.
Each person paid $9, totalling $27. The manager has $25 and the
bellboy $2. The bellboy's $2 should be added to the manager's
$25 or subtracted from the tenants' $27, not added to the tenants'
How Old Are You
Tim is 3,
Jane is 8, and Mary is 15. Clue number 1 leads to the situation
a year and a half ago, when Tim was 1 1/2, Jane was 6 1/2, and
Mary was 13 1/2.
hourglasses. When the 4-minute glass runs out, turn it over (4
minutes elapsed). When the 7-minute glass runs out, turn it over
(7 minutes elapsed). When the 4-minute glass runs out this time
(8 minuts elapsed), the 7-minute glass has been running for 1
minute. Turn it over once again. When it stops, 9 minutes have
travels at 10 mph, so they meet at the center of the 20 mile distance
in exactly 1 hour the fly travels 15 mph and so at the end of
the hour, he will have gone 15 miles.
On a book
shelf the first page of the first volume is on the "inside" so
the bookworm eats only through the cover of the first volume,
then 8 times 1000 pages of Volumes 2 - 9, then through the cover
to the 1st page of Vol 10. He eats 8,000 pages.
If the bookworm
ate the first page and the last page, it ate 8,004 pages.
The sign on
box A says "The sign on box B is true and the gold is in box A".
The sign on box B says "The sign on box A is false and the gold
is in box A". The following argument can be made: If the statement
on box A is true, then the statement on box B is true, since that
is what the statement on box A says. But the statement on box
B states that the statement on box A is false, which contradicts
the original assumption. Therefore, the statement on box A must
be false. This implies that either the statement on box B is false
or that the gold is in box B. If the statement on box B is false,
then either the statement on box A is true (which it cannot be)
or the gold is in box B. Either way, the gold is in box B.
The wiseman tells them to switch camels.
There is no
reason whatever why the customer's original deposit of $100 should
equal the total of the balanes left after each withdrawal. The
total of withdrawals in the left-hand colum must always equal
$100, but is is purely coincidence that the total of the right-hand
column is close to $100.
Mark the baskets
or line them up. Take 1 ball from the 1st basket, 2 balls from
the 2nd, 3 balls from the 3rd etc. Put them all on the scale.
Their mass should add up to 10+20+30+...+100=550kg. Subtract the
mass you get from 550 and you get the basket they're in! eg. If
the 9kg balls are in basket 6, the scale will read 10+...+50+54+70+...+100=544kg.
meet, they're both at the same spot, so they are both the same
distance from NYC..