With the help clues provided in the image, can you find the 5 digit key?

I have an apple tree , number of apple in this tree get doubles every week.

On 30th week , the tree gets completely filled with apples :-)



Can you tell me , on what week does my tree is half covered with apples ?

There is a circular car race track of 10km. There are two cars, Car A and Car B. And they are at the exact opposite end to each other. At Time T(0), Both cars move toward each other at a constant speed of 100 m/seconds. As we know both cars are at the same speed they will always be the exact opposite to each other.
Note, at the center, there is a bug which starts flying towards Car A at time T(0). When the bug reaches car B, it turns back and starts moving towards the car A. The speed of bug is 1m/second. After 5 hours all three stop moving.
What is the total distance covered by the bug?

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

The answer I give is yes, but what I mean is no. What was the question?

I cannot talk, but I always reply when spoken to. What am I?

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.

What is the largest number you can write with just 3 digits?

What is 3/7 chicken, 2/3 cat and 2/4 goat?

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?