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

I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

There is a number which when you multiply by 3 and subtract 2 from the result, then the resulting number is the reverse of the actual number.

What is the smallest number that stands true on the statement?

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

At my favorite fruit stand,
an orange costs 18,
a pineapple costs 27,
and a grape costs 15.
Using the same logic, can you tell how much a mango costs?

Can anyone tell me a word in the English dictionary which has a silent 'z'?

Through your logical capabilities, can you make 7 an even?

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

There is a circular car race track of 10km. There are two cars, Car A and Car B. And they are at the exact opposite end to each other. At Time T(0), Both cars move toward each other at a constant speed of 100 m/seconds. As we know both cars are at the same speed they will always be the exact opposite to each other.
Note, at the center, there is a bug which starts flying towards Car A at time T(0). When the bug reaches car B, it turns back and starts moving towards the car A. The speed of bug is 1m/second. After 5 hours all three stop moving.
What is the total distance covered by the bug?