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## How old is Mike?

How old is Mike? David and Mike are brothers. David is 33 years old today. This is three times as old as Mike was when David was the age that Mike is today.How old is Mike? Click here for the solution Mike is 22 years old. ShareTweet more riddles How old is Mike?...

## How many – how much?

How many – how much? The engineering department was arranging for a rather expensive catered lunch to bid farewell to their retiring colleague. They calculated that it would cost each person \$30. One good mathematician remarked, “It’s lucky that...

## Where’s the other dollar?

Where’s the other dollar? Three guys walk into town. They go into a hotel and ask for a room they can share. The clerk has just the thing they want for thirty dollars. The clerk sends them to the room, takes out the ledger, and realizes that he made a mistake....

## What is that order and logic?

What is that order and logic? Eon, two, ether, flour, verify, fixes, evens, weight, inner, net, leavened, wavelet, tethering, counterfeit, stiffener, existent, retentiveness, heightened, internecine, noteworthy. These 20 words are given in a definite, logical order....

## What percentage?

What percentage? If 70 percent of the population have defective eyesight, 75 percent are hard of hearing, 80 percent have sinus trouble and 85 percent suffer from allergies, what percentage (at a minimum) suffer from all four ailments? Click here for the solution 10...

## Probability

Probability Three points are selected at random on a sphere’s surface. What is the probability that they all lie in the same hemisphere?Assume that the great circle, bordering a hemisphere, is part of the hemisphere. Click here for the solution The probability...