## Erratic EquationsSeries teasers are where you try to complete the sequence of a series of letters, numbers or objects.Fill in the 3 question marks.
1-3, 3/3, 2*2, 6+?, 13-?, 13*1, 3+? ## AnswerThey are (in order): 1, 3, 13.The equations, when solved, make a second series: -2, 1, 4, 7, 10, 13, 16. Hide ## What Next?
Tweet
See another brain teaser just like this one...Or, just get a random brain teaser If you become a registered user you can vote on this brain teaser, keep track of which ones you have seen, and even make your own. Back to Top |