Find the number of squares in the below-given picture.

A woman is sitting in her hotel room and hears a knock at the door. She opens the door to see a man whom she’s never met before. He says, “I’m sorry, I have made a mistake, I thought this was my room.” He then goes down the corridor and into the elevator. The woman goes back into her room and calls security. What made the woman so suspicious of the man?

Can you complete the sequence puzzle?

AR TA GE CA LE VI LI _

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

2, 3, 5, 9, 17, _ What is the next number in the sequence?

A lion and its tamer are standing inside a cage that measures 1 unit in radius. Both of them can effortlessly run at the speed of 1 unit maximum.

1) Suppose the lion is hungry, will he be able to eat up the tamer?
2) If yes, how long can the tamer survive?

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

When monkey rotate the gear, which mark will be hit 1 or 2 ?

I went to the bookshop and spent one-half of the money that was in my purse.

When I came out, I found that I had as many cents as I had dollars and half as many dollars as I had cents when I went in. Find the money in my purse when I entered the store.

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