Introduction
Cards
The following four cards sit on a table:
Each card has a digit on one side and a letter on the other side. Which cards should you turn around to test the following statement:
The answer is correct. Good job!
The answer is not correct. Try again!
You should turn the cards with the "A" and the "3".
The "A" should be turned to verify that there is an even digit on the other side. When there is an odd digit on the other side, the statement is not true.
The "3" should be turned to verify that there is no vowel on the other side. When there is a vowel on the other side, the statement is not true.
The "B" does not need to be turned; it is not a vowel and therefore it doesn't matter what kind of digit is on the other side.
The "4" also doesn't need to be turned. Whether there is a vowel or a consonant on the other side, the card always satisfies the statement: after all, it is not stated that only cards with a vowel have an even digit on the other side!
Sheep
Read carefully the following statement:
How many sheep does he have left?
The answer is correct. Good job!
The answer is not correct. Try again!
The statement says that "all but seven sheep died". We could rephrase this as "all, except 7". That means 7 are still alive.
Poem
Read carefully the following poem:
As I was going to St. Ives
I met a man with seven wives
The seven wives had seven sacks
The seven sacks had seven cats
The seven cats had seven kits
Kits, cats, sacks and wives
How many were going to St. Ives?
The answer is correct. Good job!
The answer is not correct. Try again!
One person is going to St. Ives (the narrator). Because the narrator "met" all of the others mentioned in the poem, this implies that they walked past each other in opposite directions, and thus none of the wives, sacks, cats, or kits was actually headed to St. Ives.
If you (like many) think this answer is a bit silly, you can assume that all the people, sacks, and animals mentioned were heading for St. Ives. In this case, we would have 1 narrator + 1 man + 7 wives + 49 sacks + 343 cats + 2401 kits = 2802 total going to St. Ives. However, this isn't the traditional answer.
Number of F's
FAY FRIED FIFTY POUNDS OF
SALTED FISH AND THREE POUNDS
OF DRY FENNEL FOR DINNER FOR
FORTY MEMBERS OF HER FATHER'S FAMILY.
How many F's are in the upper sentance?
The answer is correct. Good job!
The answer is not correct. Try again!
It appears 14 times. Make sure to count the "F"s in the word "OF", which people commonly miss.
Kubla Khan
In Xanadu did Kubla Khan
A stately pleasure dome decree;
Where Alph, the sacred river, ran,
Through caverns measureless to man
Down to a sunless sea.
One of Samuel Taylor Coleridge's most famous poems begins with the five lines quoted above. Do you see what is so remarkable about them?
It appears 14 times. Make sure to count the "F"s in the word "OF", which people commonly miss.
Kubla Khan
A merry Christmas and a happy new year!
Merry, merry carols you'll have sung us,
Christmas remains Christmas even when you're not here,
And though afar and lonely, you're among us.
A bond is there, a bond at times near broken.
Happy be Christmas then, when happy, clear,
New heart-warm links are forged, new ties betoken,
Year ripe with loving giving birth to year.
This poem, by late British poet J.A. Lindon, has a truly amazing structure. Can you figure out what it is?
It appears 14 times. Make sure to count the "F"s in the word "OF", which people commonly miss.
Blind Bus Driver
A newspaper headline reads, "Blind Man Is Hired to Drive School Bus."
How can this be true? If you interpret the sentence properly, it will make good sense.
It appears 14 times. Make sure to count the "F"s in the word "OF", which people commonly miss.
Blind Bus Driver
A newspaper headline reads, "Blind Man Is Hired to Drive School Bus."
How can this be true? If you interpret the sentence properly, it will make good sense.