Without looking at a calendar, within a minute name, a boy's name using 5 consecutive 1st letters of 5 consecutive months

I have eight fingers and two thumbs but I do not live. What Am I?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

What does does this rebus picture means ?

1. What does:
TIM JOB
represent?

2. What does:
MO_ _
represent?

If you say my name, I will no longer exist. What am I?

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.

Can you circle exactly four of these numbers such that the total is twelve?

1 6 1
6 1 6
1 6 1
6 1 6

I add 5 to 9 and get 2. The answer is correct, so what am I?

A man has a barrel filled with oil that weighs 100 pounds, and then he puts something into it. Now the barrel weighs less than 100 pounds. What did he put in the barrel?