A certain family party consisted of 1 grandfather, 1 grandmother, 2 fathers, 2 mothers, 4 children, 3 grandchildren, 1 brother, 2 sisters, 2 sons, 2 daughters, 1 father-in-law, 1 mother-in-law, and 1 daughter-in-law.

A total of 23 people, you might think, but, no. What is the minimum number of people here?

What number comes next in the sequence:

1 2 3 5 9 12 ==?==

Starting with HATE, change one letter at a time until you have the word LOVE.

Each change leaves the other letters in their original places and must result in a proper word.

What is the minimum number of steps required to achieve this change?

HATE
....
....
....
LOVE

What number comes next in the sequence:

13 17 31 37 71 73 79 97 ==?==

A lion can consume one sheep in two hours, a wolf can consume three sheep in eight hours and a hyena can consume one sheep in eight hours. If all of the animals were in a cage and were given a sheep, how long would it take them to consume it?