Complete the following series. It.s very logical:

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

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 = ?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

In a jungle where there are no street lights or any other artificial source of lights, I notice a black snake crossing the road.
How did I get sight of the snake?

Count The number of F's in the paragraph below:

"FINISHED FILES ARE THE RESULT OF YEARS OF SCIENTIFIC STUDY COMBINED WITH THE EXPERIENCE OF YEARS"

Find the next number in the sequence

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

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

What building has the most stories?

Can you solve the below geography rebus by decoding the below rebus ?

The doctor advised his patient to take a tablet after every fifteen minutes. He gave him five tablets in total.

How much time will he take to have all the five tablets?