Which is heavier: a ton of bricks or a ton of feathers?

Can you count the number of squares in the figure below?

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

Which statement is true out of the following?
One statement here is false.
Two statements here are false.
Three statements here are false.

Find The Odd One Out

1. FLOW
2. SNIP
3. TRAP
4. DRAW
5. BACK

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

John and Jenni are a married couple. They have two kids, one of them is a girl. Assume safely that the probability of each gender is 1/2.
What is the probability that the other kid is also a girl?

Hint: It is not 1/2 as you would first think.

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

John was running from 40 thieves. John has got 3 gold boxes which weigh as 4kg, 2kg, and 1kg respectively. A witty man asked John to stay with him for seven days in exchange for 1kg gold per day. John needs to stay there for seven days and also do not want to give the witty man any advance. How can John pay for his seven days stay?

I have no life, but I can die. What am I?