Can you find out what is missing?

1 3 5
2 4 ?

Hint: It's not six. Think out of the box.

You need to complete the maze by entering from the entrance marked below in the figure near the yellow circle, bottom left and leaving from the exit point near the green circle, bottom middle.

Rule of Game: You can move only by exchanging green and yellow circles.

Find the mistake in the below maths equations

A = 2
A(A-1) = 2(A-1)
A2-A = 2A-2
A2-2A = A-2
A(A-2) = A-2
A = 1

There are three Athletes (John, Tarun and Harish) and their individual Coaches (Jacob, Meenaxi and Priyanka) standing on the shore.
No Coach trusts their Athlete to be near any other Coach unless they are also with them.
There is a boat that can hold a maximum of two persons.
How can the six people get across the river?

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?

O_er_t_o_

Complete the missing letters of the given word.

What four weights can be used to balance from 1 to 30 pounds?

I look at you, you look at me, I raise my right, you raise your left. What am I?

I can write cow in 13 letters.

Can You?

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