The letter E. The series contains all of the letters that rhyme with bee (apologies to any English speakers who pronounce Z as zed instead of zee if this confused you).
The word vex. “v” is Roman numeral 5, which is odd. “x” is Roman numeral 10, which is even. “e” is the base of the natural logarithm and is irrational (e = 2.718281828…). Its mantissa (the part to the right of the decimal point) is infinitely long.
This word starts with the same letter it ends with and there are two of the same along the way. There is another pair and one each of two more, just to make you smile. What is the word?
Giggling. It starts and ends with ‘g’ and there are two more ‘g’s in the middle. It also has a pair of ‘i’s and one ‘l’ and ‘n’. Plus, giggling makes you smile ;)
Four different-colored balls are being used in a gym class activity – blue, red, yellow and orange. Each student must hold two different-colored balls, but no two students can have the same two colors (for example, only one student can hold the blue and red ball).