### Brain Teasers

# Triples

Series
Series teasers are where you try to complete the sequence of a series of letters, numbers or objects.

A Triple is a Series with 6 sets, each with 3 numbers apiece. The relationship between the first two numbers is the same throughout all of the sets, and the relationship between the last two numbers is also the same, however, it is different than the first relationship. Try and find the missing numbers:

2 5 10

3 10 20

4 17 34

5 __ __

_ 37 __

_ __ 100

2 5 10

3 10 20

4 17 34

5 __ __

_ 37 __

_ __ 100

### Answer

2 5 103 10 20

4 17 34

5 26 52

6 37 74

7 50 100

Relationship for first two numbers: square it, add 1 (2 squared=4, 4+1=5)

Relationship for last two numbers: double it (5 doubled = 10)

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