81 x 9 = 801. What must you do to make the this equation true?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

What begins with T, ends with T, and has T in it?

Using eight eights and addition only, can you make 1000?

In the Thar desert, 3 men found a big 24L Jar is full of water. Since there is a shortage of water so they decided to distribute the water among themselves such that they all have equal amounts of it. But they only have a 13L, a 5L and an 11-litre Jar.

How do they do it?

0 0 0 = 6
1 1 1 = 6
2 2 2 = 6
3 3 3 = 6
4 4 4 = 6
5 5 5 = 6
6 6 6 = 6
7 7 7 = 6
8 8 8 = 6
9 9 9 = 6

You can use any mathematical symbols in the space provided to make all above algebraic expressions true.

Can you find out the missing number in the grid?

Can you replace the X (both small and big x) with the numbers between 1 to 19 such that all the rows of 3 numbers between X (big x) sum to 23?

Forwards I am heavy, backward I am not. What am I?

What occurs twice in a week, once in a year but never in a day?