Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

Before Mount Everest was discovered, what was the highest mountain in the world?

Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

Pronounced as 1 letter, And written with 3, 2 letters there are, and 2 only in me. I’m double, I’m single, I’m black blue and grey, I’m read from both ends, and the same either way. What am I?

In the given picture, you can find two letters missing. When two particular letters are placed in the missing spots, you get an eight-letter word while reading in the anti-clockwise direction. Can you find out the missing letters and the missing word eventually?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

I have nine bottles of wine and one of the nine bottles is poisoned.
I need to find the poisoned bottle with two facts
(1) Poison is deadly, only a sip will cost death
(2) I have two mice to do so.

How should I do it?

I taste better than I can smell. Who am I?

Can you count the number of blocks in the picture below?

A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?