Decode below three cipher riddles:

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

Prove that the below maths equation is true.

8 + 8 = 91

Teacher ask the student

'Why are you standing on that chair in music class ?'.

what did student replied ?

Can you find out a way through which you can make five squares out of the given figure by moving just six match sticks?

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

Sachin bought a car with a strange 5 digit numbered plate.The water image of the number is 78633 more than my car number. All the digits of car number are distinct.

What is the original number on number plate?

There are six people in a family namely M, N, O, P, Q and R.

R and O are brother and sister.

N is the brother of Q's husband.
P is the father of M and grandfather of R.

How many male members are in the family?

I have a clock(12-hour format) and both the needles of the clock overlap at 12:00.
After how much time, they will overlap again?

In the attached figure, you can see a chessboard and two rooks placed on the chess board. What you have to find is the number of squares that do not contain the rooks. How many are there?

I am never scared but became petrified and can’t live in a house but would die to make one. What am I?