Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

On 26-01-2022, Juli was murdered at her house in a city in India in the afternoon. There were three suspects in the murder and the following are the statements that were given by them:

John: I visited my village that day.
Jacob: I was out to deposit my house tax in the municipality office at that time.
Jonny: I was at a friend's place having lunch at that time.

Can you find out who is the murderer?

Why is the Hole below a Lock?

What is harder to catch the faster you run?

John and Jenni are a married couple. They have two kids, one of them is a girl. Assume safely that the probability of each gender is 1/2.
What is the probability that the other kid is also a girl?

Hint: It is not 1/2 as you would first think.

Two girls were born to the same mother, on the same day, at the same time, in the same month and year and yet they're not twins. How can this be ?

Solve the following series:
AZ, GT, MN, __, YB

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

Rectify the following equality 101 - 102 = 1 by moving just one digit.

I add 5 to 9 and get 2. The answer is correct, so what am I?