# DAY/DYDD/GIORNO/NAP 352: The Main Challenge

Follow the rules below and eliminate every number from a given list, except one.

Firstly, list the multiples of 10 from 10 to 100 inclusive, then eliminate:

• multiples of 4
• factors of 100
• multiples of 3

Which is the only number that remains? The 7puzzle Challenge

The playing board of the 7puzzle game is a 7-by-7 grid containing 49 different numbers, ranging from 2 up to 84.

The 6th & 7th columns contain the following fourteen numbers:

5   7   9   24   28   30   32   36   40   49   50   54   64   66

How many multiples of 4 are listed? The Factors Challenge

Which of the numbers below are factors of 352?

3    4    5    6    7    8    9    10    11    12    None of them The Mathematically Possible Challenge

Using 13 and once each, with + – × ÷ available, which are the only TWO numbers it is possible to make from the list below?

1    4    9    16    25    36    49    64    81    100

#SquareNumbers The Target Challenge

Can you arrive at 352 by inserting 2, 4, 8, 11 and 16 into the gaps on each line?

•  (◯+◯)×(◯+◯)–◯³ = 352
•  ◯²×◯×◯×◯÷◯ = 352   