Suppose we lay down two cups in front of you. One of the cups is filled with tea and the other one with coffee. Now we ask you to take a spoonful of tea and mix it with the coffee. At this moment, the coffee cup has a mixture of tea and coffee. You have to take that mixture (spoonful) and add it back to the tea.

Can you now tell if the cup of coffee has more tea or the cup of tea has more coffee?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

Decode below rebus
D
N
A
T
S , D

When I go in I might cause pain. I cause you to spit and ask you not to swallow. I can fill your hole. What am I?

I am white when I am dirty, and black when I am clean. What am I?

Its something that each of us devours,
Not just us but birds, beats, trees, and flowers,
Frets iron and nibbles steel,
Toil hard stones to meal,
Exterminates king, collapse town,
And blows the mountains down.

Find the next number in the series.
1 10 24 43 67 ?

I am quite hot but become too cold if you remove the first two letters. What am I?

Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

If 24H in a D => 24 hours in a day.
What does "64S on CB" stand for?