Find the next number in the sequence

5 12 24 36 ?

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

Two old friends, Jack and Bill, meet after a long time.

Three kids
Jack: Hey, how are you, man?
Bill: Not bad, got married and I have three kids now.
Jack: That's awesome. How old are they?
Bill: The product of their ages is 72 and the sum of their ages is the same as your birth date.
Jack: Cool..But I still don't know.
Bill: My eldest kid just started taking piano lessons.
Jack: Oh, now I get it.

How old are Bill's kids?

Check out the number list below and find what number comes next in the sequence.

111 , 113 , 117 , 119 , 123 , 137 , ?

'S' refers to the number of seconds in a day and 'H' refers to the number of hours in ten years. Which quantity out of these two is greater?

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

John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

Below, you can see some coding:
January = 1017
February = 628
March = 1335
April = 145
May = 1353
June = 1064
July = 1074
August = 186

Now deciphering the way it has been coded, can you find out how September will be coded?

What does Alexander the Great and Winnie the Pooh have in common?