In a science lab, a petri dish hosts a healthy colony of yeast for an experiment. Now every minute, all the yeast cells divide into two. At noon, there was just a single cell of yeast and at 1:22, the Petri dish was half full. Can you calculate when the dish will be full of yeast?

What has 88 keys?

I am quite hot but become too cold if you remove the first two letters. What am I?

A sundial has the fewest moving parts of any timepiece. Which has the most?

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

If you had an infinite supply of water and 5-quart and 3-quart pails, how would you measure exactly 4 quarts? What is the least number of steps you need?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

Eight of us go fourth, not back, to protect our king from an attack. What are we?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

Thomas has missed an excessive number of days of school, so he must meet with Principal Davis. Mr. Davis asks him "Why on Earth have you missed so many days?" Thomas replies "There just isn't enough time for school. I need 8 hours of sleep a day, which adds up to about 122 days a year. Weekends off is 104 days a year. Summer vacation is about 60 days. If I spend about an hour on each meal, that's 3 hours a day or 45 days a year. I need at least 2 hours of exercise and relaxation time each day to stay physically and mentally fit, adding another 30 days. Add all of that up and you get about 361 days. That only leaves 4 days for school." The principal knows Thomas is full of it, but can't figure out why. Where is Thomas going wrong?