Not So Easy Arithmetic, 33333 Hints
Some of you are having problems with this one. The trick is to work with the leftmost and rightmost digits and limit the possibilities.
So, with the hints, try again !
Use the numbers 1,2,3,4,5,6,7,8,9 only once
to fill in the blanks and complete the equation!
There are actually 2 possible solutions. Can you find them ?
Red or Black
A deck of 52 poker cards (without jokers) are divided equally into 2 piles.
If you do it for 500 times, how many times will
the number of red cards in the 1st pile be equal to the number of black cards in the 2nd pile ?
Numbers in a Square
Arrange the numbers 1,2,3,4,5,6,7,8,9 in the square below such that, adding any 3 numbers, horizontally, vertically or diagonally, will have the same total.
1 and 2 have been placed. Do it for the rest of the numbers.
Brother and Sister
A young boy and his older sister are chatting.
“Sis, if I take away 2 years from my age and give them to you,
you will be twice my age!”
The older sister says.
“Well, give me 1 more and I’ll be 3 times your age!”
How old is each sibling ?
8+1 = 1 Matchstick Puzzle
Another matchsticks puzzle!
The equation 8+1=1 is wrong.
Make the equation right by changing the position of a single matchstick.
There are at least 3 solutions, how many can you find ?
The Circle Puzzle
Below is a quadrant. Within this is rectangle ABCD, which touches the edge of the quadrant at point D. Assuming point A is located at the center of this quadrant, how long is the diagonal line BC ?
3 Students and the Missing Dollars
Three students paid $30 for private tuition, $10 each.
The teacher decided to return $5 to them and gave $5 to her assistant to return to the students.
As $5 is not divisible by 3, the assistant returned $3 to the students and kept $2.
But he was puzzled and asked himself.
“If the students paid 3x $9 = $27 and I kept $2. $27 + $2 = $29 but the initial payment was $30 ?!!”
What’s wrong with his thinking and where is the $1?
