What's a single-digit number with no value?

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?

I am a normal creature, but I have five hands. I can even have more but even then I will be considered normal.

Who am I?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

What do you answer even though it never asks you questions?

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

Can you spot the man between the coffee bean in the picture below ?

What is common among 11, 69, and 88?

Astrology starts with the alphabet A, Biology starts with B, Psychology with P and Limnology with L.

Can you find an "ology" that begins with a P?

15 caves are arranged in a circle at the temple of doom. One of these caves has the treasure of gems and wealth. Each day the treasure keepers can move the treasure to an adjacent cave or can keep it in the same cave. Every day two treasure seekers visit the place and have enough time to enter any two caves of their choice.

How do the treasure seekers ensure that they find the treasure in the minimum number of possible days?