Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

What word begins and ends with an E, but has only one letter?

Can you find the six hidden animals in the picture below?

Can you solve below mathematical equation?

2^1234 - 2^1233

If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?

Which five letter word can be added at the end of below word to form a
valid word?

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At a Society election for president, precisely 963 votes were cast.
There is a total of 4 candidates that participate in the election.

The winning candidate exceeds the opponents by 53, 79 and 105 votes.

How many votes do each candidate gets?

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

In the addition below, all digits have been replaced by letters. Equal letters represent equal digits and different letters represent different digits.
ABCABA
BBDCAA
ABEABB
ABDBAA
------- +
AAFGBDH
What does the complete addition look like in digits?