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

In a supermarket, there is an intelligent glass pane before a refrigerating unit. This glass pane allows cherries and apples through it but does not allow grapes and Orange to pass through it.

Can you identify the rule that the glass pane is following?

Can you replace the question mark with the correct letter?

6 + 6 + 6 = N
7 + 7 + 7 = E
8 + 8 + 8 = R
0 + 0 + 0 = ?

Find the Odd One Out?
84129
32418
47632
36119
67626
72927

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

Solve this riddle by finding the odd one out from the rest.

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

How could a baby fall out of a twenty-story building onto the ground and live?