Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

How many letters are in the alphabet?

If you read clockwise, you can form a word by inserting three missing letters in the picture given below. Can you do it?

Can you find the 09 errors in the picture below?

Replace the 'X' with any mathematical symbol to make the expression equal to 111.

18 X 12 X 2 X 3 = 111

How do you go from 98 to 720 using just one letter?

Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT

Get total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator.
Do you ?

We have arranged an array of numbers below. What you have to do is use any kind of mathematical symbol you know excluding any symbol that contains a number like cube root. You can use any amount of symbols but you have to come up with a valid equation for all of them.

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