Soldiers line up spaced with pride, Two long rows lined side by side. One sole unit can decide, If the rows will unite or divide. Tell me, tell me, scream it out. What's the thing I talk about?

The answer is A Zipper.

A Zipper

A 12X16X24 cuboid is filled up with 4608 little cubes of length 1. An ant passes through a straight line, connecting two opposite vertices of the cuboid.

How many little cubes does the ant pass through?

I've measured it from side to side, 'Tis three feet long and two feet wide. It is of compass small, and bare To thirsty suns and parching air.

What is it?

Everyday I stalk you all day long, With every move you make, I never make one wrong. I vanish twice a day with the sun's height and fall, I will follow you anywhere, even the bathroom stall.

What am I?

Arrange the cards from the standard card deck as follows - - Arrange the cards side by side in a line. - Any two adjacent cards are either the same suit or rank. - No three cards in a row are the same suit or rank.

What is the maximum number of cards that can be arranged like this?