# DAY/DYDD/GIORNO/NAP 351:

The Main Challenge

This is perhaps a bit trickier than you think!  Add these four numbers together and write your answer in words:

•  Two hundred and four thousand and nine,
•  Seventy thousand, nine hundred and eight,
•  Four hundred and fifty thousand and seventy,
•  One hundred and seven thousand, three hundred and ninety-five.

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 4th & 5th columns contain the following fourteen numbers:

3   6   8   11   14   18   20   25   42   44   63   72   77   84

How many numbers listed are NOT multiples of 3, 5 or 7?

The Factors Challenge

Which THREE of the numbers below are factors of 351?

3    5    7    9    11    13    15    17    19

The Mathematically Possible Challenge

Using 13 and once each, with + – × ÷ available, which is the ONLY number it is possible to make from the list below?

10    20    30    40    50    60    70    80    90    100

#10TimesTable

The Target Challenge

Can you arrive at 351 by inserting 1, 2, 3, 4 and 5 into the gaps on each line?

•  (◯+◯)²×double◯–(◯×◯)² = 351
•  (◯–◯)³×(◯×◯–◯) = 351