Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

Christina is older than Kareena and Karishma. Katrina is older than Karishma and younger than Kareena. If Kareena has a brother named John, who is older than Christina, who's the youngest?

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?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

If you read clockwise, you can form a word by inserting three missing letters in the picture given below. Can you do it?

What number do you get when you multiply all of the numbers on a telephone's number pad?

I have branches, but no fruit, trunk or leaves. What am I?

A doctor and a boy were fishing. The boy was the doctor’s son, but the doctor was not the boy’s father. Who was the doctor?

If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?