You need to arrange three 7 and mathematical symbols to form number 1?

In a boat, the father of a sailor's son is sitting with the son of the sailor. However, the sailor is not present on the boat.

Can this even be possible?

To attend world science seminar, A famous chemist from Mexico visit
London. In the lab, the scientist was killed and his six assistants were under suspicion of killing the chemist.
Name of six assistants: Austin, Wayne, Dege, Oscaru, Lingard, and Rojo.
He left a note "76-20-44 79-16-22-7"

A local detective Jack was called to solve the case,

After reading the note, Jack instantly asked the police to arrest the murderers.

Who are the murderers?

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

A network of 20 x 10 squares is given to you.

Can you calculate how many unique squares and rectangles can be formed combining two or more individual squares ?

Why is it very easy to weigh a fish?

Can you calculate the probability of getting a sum of six when a dice is thrown twice?

O_er_t_o_

Complete the missing letters of the given word.

It is always ahead of me yet I can never see it. What is it?

If 21x = 79x, what is the value of x?