Can you replace the question mark with the correct letter?

6 + 6 + 6 = N
7 + 7 + 7 = E
8 + 8 + 8 = R
0 + 0 + 0 = ?

Buy me, smell me or deliver me, I do not change.

Who am I?

A Child was born in Lahore, Pakistan. Still, the child is not a Pakistani citizen. why?

Find the next number in the sequence

1, 2, 6, 21, 88, __?

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?

Can you count the number of seconds in a year?

Clue: You need to bother about calculation.

How could a baby fall out of a twenty-story building onto the ground and live?

How can one talk without saying a single word?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

Solve below rebus puzzle?