# DAY/DYDD/GIORNO/NAP 277:

The Main Challenge

Each of the ten letters, A-J, in the two sections below contains a subtraction calculation:

• Section 1

E:74   J:21   G:75   A:86   C:42   I:85   F:65   B:98   H:95   D:54

• Section 2

I:43   A:63   H:31   B:76   F:52   J:96   E:97   G:73   D:64   C:87

Which is the only letter that has the SAME answer in BOTH sections?

The 7puzzle Challenge

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

The 3rd & 5th rows contain the following fourteen numbers:

6   7   13   16   21   25   36   42   45   50   66   80   81   84

What is the product of the two multiples of 10?

The Factors Challenge

Which of the following numbers are factors of 277?

3    5    7    9    11    13    15    17    19    None of them

The Mathematically Possible Challenge

Using 27 and 10 once each, with + – × ÷ available, which FOUR numbers is it possible to make from the list below?

5    10    15    20    25    30    35    40    45    50

#5TimesTable

The Target Challenge

Can you arrive at 277 by inserting 1, 2, 3, 4 and 5 into the gaps below?

•  (◯+◯)³+(◯–◯)³– = 277