A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

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

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

There is something which is always coming but never arrives?

Which city is three-fifths chick two third cat and 50% goat?

As a whole I am both
safe and secure.

Behead me and I become
a place of meeting.

Behead me again and I am
the partner of ready.

Restore me, and I become
the domain of beasts.

What am I?

I want to fill my bucket using both cold and hot water.
I have two taps for both cold and hot water. The hot water tap fills the bucket in exact 6 hours and the cold water tap fills the bucket in exact 4 hours.
I turn both of them simultaneously but I forgot to turn off another tap which removes the water out of the bucket. This tap can empty the bucket in 12 hours.

How Long will it take to fill the bucket?

What seven-letter word has hundreds of letters in it?

Can you find out which triangle will have a bigger area among the following?
1. A triangle with sides 300, 400 and 500
2. A triangle with sides 300, 400 and 700

As shown in the image, the nine Dogs are square fenced. By constructing just two square fences can you make sure that two Dogs cannot meet each other without crossing the fence?