1) 12, 5, 20, X, 18, 4 What is the value of X? X = 1 - No maths involved, it's the sequence on the top of a dart board. 2) HIJKLMNO is the chemical formula for? Water - It's part of the alphabet from H to O (H2O) 3) Draw a square with three lines What was so difficult with this one? If I had just said "Draw a square.", you would possibly have come up with - a four sided figure with equal sides and four right angles but I added 'with three lines'. Look below and you will see a square with three lines!