If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

Find The Missing Number In the Sequence.
6 25 64 ? 32 1

Can it be possible to build a house that has all its four walls facing towards the South?

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?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

Which is the correct shadow of the bird?

You need to arrange three 7 and mathematical symbols to form number 1?

I am soft and cuddly that soothe your heart. But, If you pick my last name I am going to tear you all apart. Who am I?

A man was just doing his job when his suit was torn. Why did he die three minutes later?

If in a car race, the man who came two places in front of the last man finished one ahead of the man who came fifth, how many contestants were there?