I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

Name the three-letter word that can complete the below words:

A) L O _ _ _ E
B) E D U _ _ _ E
C) _ _ _ E R
D) _ _ _ T L E

12345 a famous South Indian actor
567 is a path in jumbled form
8 & 10 are same letters
9 is one among the first six alphabets.
WHO 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?

My location can be determined by the below rebus.
So where am i ?

One night, a man runs away from home. He turns left and keeps running. After some time he turns left again and keeps running. Later, he turns left one more time and runs back home—but when he gets home, he finds a man in a mask. Who was the man in the mask?

You need to pick one entry from pot A and one from pot B to have a perfect match. Can you do it?

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?