Plep's Puzzles

Friday, June 29, 2007

Four 4's

Using arithmetic combinations of four 4's express the numbers from 1 to 10.
You must use all four 4's for each number.
You may combine the 4's using the arithmetic operations +, -, * (multiplication) and / (division).
You are also allowed to use sqrt (square root) (e.g. sqrt(4)=2, sqrt(4/4)=1).
You do not need to use concatenation (e.g. 44), decimal places (e.g. 4.4), factorials (e.g. 4!), or trig functions such as sin or cos.

Wednesday, June 20, 2007

CM is good, MC is bad.
C is good, M is bad.
IX is good, XI is bad.
L is bad, I is good.

Saturday, June 09, 2007

1/Make 4 out of 2,5,6, and 8.

2/Make 40 out of 4,6,8, and 8.

Sunday, June 03, 2007

Fs xlt bzk oazr qdfp, cfua xltopais z mzq lk qda ezbh.

Clue : substitution keyword ZEBRAS.