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

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Can you count the number of blocks in the picture below?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

In a basket of apples,
when counted in twos, there was one extra
when counted in threes, there were two extra when counted in fours, there were three extra
when counted in fives, there were four extra
when counted in sixes, there was five extra.

However, if the apples were counted in sevens, no extra apple was left. Can you calculate the minimum number of apples that were present in the basket?

What do you think with the below Picture ?

You have two strings whose only known property is that when you light one end of either string it takes exactly one hour to burn. The rate at which the strings will burn is completely random and each string is different.

How do you measure 45 minutes?

If six children and two dogs were under an umbrella, how come none of them got wet?

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

I have a clock(12-hour format) and both the needles of the clock overlap at 12:00.
After how much time, they will overlap again?

If an electric train is travelling south, then which way is the smoke going?