Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

Rectify the following equality 101 - 102 = 1 by moving just one digit.

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

Can you count the number of lines in the below picture?

John drives to his office at 20km/hr. After reaching the office, he realizes that today is a holiday. He went back at an average speed of 30km/hr. Discounting the time spent in the stoppage what was the average speed of his journey?

The dirtier I get, the whiter I look. Who am I?

I am dry when I go inside, but wet when I am pulled outside.
The longer I am inside, the stronger I get
When I am completely out, I am wet and I literally sag
Who am I?

A man dies of old age on his 25 birthday. How is this possible?

What has hands, but can’t clap?

James Bond is caught up in a mysterious scenario where the evil villain has him blindfolded. He somehow breaks through the handcuffs but is unable to get the blindfold off. Upon searching, he comes across a bow and 3 arrows. He can hear the villain speak, and thus tries to take a shot at him. He launches the first arrow, it misses the villain. He then launches the second arrow and it misses by a greater margin.

What is the probability that this third shot our James bond takes will be worse than the second shot?