A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.

Can you make a fire with just a single stick?

1. What does:
TIM JOB
represent?

2. What does:
MO_ _
represent?

Do You See It?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

Count the number of squares in the picture below.

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

A number can be multiplied by multiple of nine
i.e 9 18 27 36 45 ...

and the resulting number consist of only one digit.

Can you identify the number ?

Peter wakes up daily to pick up his cycle and crosses the border between Spain and France daily with a bag on his shoulder. He is investigated daily by the officials but they don't find anything suspicious.

If we tell you that he is smuggling something what would it be?

Replace the question mark with the correct number, given the pair of numbers exhibits a similar relationship?

? : 3839 :: 11 : 1209