Riddles: Your Number’s Up

Posted on 04. Nov, 2009 by Jake in brain teasers

Things are getting trickier as the year comes to it’s inevitable and less than graceful close. Ain’t it feel good that in this crazy world some things – maybe not the weather in Jo’burg, but some things – always make sense. That is, if you can figure ‘em out

Riddle 1 for the week

What do the following numbers have in common? (tricky one, this…)
3 7 10 11 12

Riddle 2 for the week

What is the next number in this series?
5 25 61 113 181 ..

Answers to be put up on the 16th of November.

Answers to last week’s riddles:

Problem 1:
Take the letters ERGRO. Put three letters in front of it, and the same three letters behind to form a common English word.
UND(ERGRO)UND

Problem 2:
Which of the following words is the
odd-one-out?
IBIS IBEX ORYX SIKA ZEBU
Ibis is a bird the rest are mammals