 # Week 24 – Day 4 Challenge – Pillows

Challenge page : http://www.ancientsocieties.com/pillows/

There is no Challenge Text, but the picture of a pillow with a formula on it : There are 2 different formula.

The first one :
[AcCUSe + (HIS – SiCKNeSS)]

Using a periodic table, we can substitute to each symbol, its Atomic number :
[AcCUSe + (HIS – SiCKNeSS)]
```Ac : Actinium, atomic number : 89 C : Carbon, atomic number : 6 U : Uranium, atomic number : 92 Se : Selenium, atomic number : 34```

etc…

Ac C U Se = 89 + 6 + 92 + 34 = 221
H I S = 1 + 53 + 16 = 70
Si C K Ne S S = 14 + 6 + 19 + 10 + 16 + 16 = 81

If we solve the equation, we get this :
221 + (70 – 81) = 210

The second part of the pillow formula is :
84 + 53 + 16 + 8 + 7 – 53 + 8 + 7 + 16

We have here to do the opposite work compared to the first formula, let’s get the elements from the atomic numbers :
```84 : Po lonium 53 : I odine```

etc…

We finally get :
Po I S O N – I O N S

If we solve this letters equation, we get 2 letters left : Po.

Po is the abbreviation of Polonium.

Putting the 2 parts together we get Polonium210

The solution is POLONIUM210

Alternative solutions : POLONIUM-210, 210POLONIUM, 210-POLONIUM