Did you solve it? Be sure to share it with your friends. Here are some more cool brain teasers for you to solve:
Triangular Numbers
Do you know what a triangular number is? Numbers that fall into this pattern are
3, 6, 10, 15, 21, ???
Here's how it works (notice the triangle):
3
X
X X
6
X
X X
X X X
10
X
X X
X X X
X X X X
15
X
X X
X X X
X X X X
X X X X X
21
X
X X
X X X
X X X X
X X X X X
X X X X X X
Can you figure out the next number in the pattern?
Spelling Game
Spelling out numbers (e.g. "one, two, three"¦") how long will it be until you encounter the letter "a" ?
Dirt
How much dirt is in a hole 3 feet wide, two feet long and 5 feet deep?
Birthday
Dennis was born on Halloween, but his birthday is always in the Spring. How does this happen?
Scary Dream
Mr. Wilford was a well-to-do businessman in Philadelphia. One late evening at the office, the nighttime security guard approached him and told him he shouldn't drive to New York the next day because he had dreamed the night before about a terrible car crash Mr. Wilford would be involved in.
Mr. Wilford ignored the warning. There was no accident, and when he returned to Philadelphia the next week, he promptly had the security guard fired. Why?
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