Count the squares in the matchstick puzzle below?

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

What does below science rebus mean?

Ag Ag Ag
Ag SPOON Ag
Ag Ag Ag

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

What does man love more than life, hate more than death or mortal strife; That which contented men desire; the poor have, the rich require; the miser spends, the spendthrift saves, and all men carry to their graves?

Can you place six X (crosses) in below board without making three in a row in any way ?

You have 10 balls with you. A friend of yours out of nowhere asks you to place those ten balls in five lines such that each of the lines has exactly 4 balls on them. He needs to check your intelligence. Prove him by doing the task.

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

Count the number of lines in the image below ?