Have a research on different types of recreational math problem such as Sodoku, ken-ken puzzle ,riddle, and alike. Submit at least any five examples with corresponding solutions.

What is the rotational symmetry of a wheel

Given the points a(-2, 1) and b(8, 6), find the coordinates of the point c on directed line segment ab, that partitions ab in the ration 2: 3.

Each month, a shopkeeper spends 5x + 14 dollars on rent and electricity. if he spends 3x−5 dollars on rent, how much does he spend on electricity? for which value(s) of x is the amount the shopkeeper spends on electricity less than $100? explain how you found the value(s).