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.

Which statement is true out of the following?
One statement here is false.
Two statements here are false.
Three statements here are false.

Look at me. I can bring a smile to your face, A tear to your eye, Or even a thought to your mind. But, I can't be seen. What am I?

Identify The phrase in the picture.

Rectify the following equality 101 - 102 = 1 by moving just one digit.

81 x 9 = 801. What must you do to make the this equation true?

Can you Find and name the hidden bird in the picture below ?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

In a supermarket, there is an intelligent glass pane before a refrigerating unit. This glass pane allows cherries and apples through it but does not allow grapes and Orange to pass through it.

Can you identify the rule that the glass pane is following?

There is so small cabin inside a deep forest.
All the forest burned out to worst possible but the inside of the cabin is still the same.
However all the person inside the cabin die.

How come ?