Can you fill the blank with the correct number?

6 30 870 756030 _____

What is both possible and impossible at the same time?

Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?

What does this rebus riddle means ?

I start and end with 500 and carry a 5 in my heart. But I require the first letter and the first number to be complete. I am the name of a King.

Who am I ?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

A landlord calls both of his sons and tells them that their horses will now decide who will transfer the inheritance. He tells them to race along the land till the end and the one whose horse will be slower will win and be the heir to all the property.

Both of them keep wandering for days but to no result. Then they ask a wise man regarding it. The man advises them on the matter after which they jump on the horses and race as fast as they can till the end. Why did they do it?

What did the wise man say?

Pronounced as one letter,
And written with three,
Two letters there are,
And two only in me.
I am double, I am single,
I am black blue and grey,
I am read from both ends,
And the same either way.

If you go to the movies and you're paying, is it cheaper to take one friend to the movies twice, or two friends to the movies at the same time?