I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

John said, "If yesterday was tomorrow, today would be Friday."

When did John make this statement?

Can you identify the direction in which this bus is moving; left or right?

Hint: The bus is moving on the roads of London.

Find the next number in the series.
1 10 24 43 67 ?

What does the below rebus riddle means?

In my garden, I have many trees but only one of them is the mango tree. In these mango trees, there are some mangoes(as expected).

But after a strong wind, there are neither mangoes on the tree nor on the ground. Explain?

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

How is the moon similar to a dollar?

You are given four results as below:
1111 = F
2222 = E
3333 = T
Then, can you find out how to code 4444?

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?