Puzzle 1
You can replace the dashes with the same four-letter word, and create two new words, one that starts with ARM, and one that ends in ING.
Can you find all possible four-letter words that work?
arm----
----ing
Puzzle 2
What number comes next in this sequence:
1 · 3 · 5 · 7 · 11 · ?
Puzzle 3
Which word does not belong with the others:
dgo act ehors ceffio elrttu ekmnoy
Puzzle 4
Hidden in the grid below are six hidden animals.
The letters are in sequence, but you move from letter to letter using the moves of a chess knight.
Once you have crossed off all of the animals, you will be left with seven unused letters.
What animal do these letters spell?

The moves of a knight are:

Note: this puzzle is not interactive, and the letters cannot be clicked.