What does this rebus riddle means ?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

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

Can you find the missing letter in the sequence?
S - T - I - L - ? - T - F - Y - C

You can see it everyday, But cannot touch it at will. What is it?

People are waiting in line to board a 100-seat aeroplane. Steve is the first person in the line. He gets on the plane but suddenly can't remember what his seat number is, so he picks a seat at random. After that, each person who gets on the plane sits in their assigned seat if it's available, otherwise, they will choose an open seat at random to sit in. The flight is full and you are last in line. What is the probability that you get to sit in your assigned seat?

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

Andrew’s doctor gives him three pills and tells him to take one every half hour. How much time will have passed by the time Andrew’s taken all three pills?

In the image below, can you find the value of an angle(y)

John buys rice at Rs.60/kg from Britain and then sells them at Rs.5/kg in India. As a result of this, he becomes a millionaire. How come?