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

In an Art Gallary, When the clock hit 11 am, Artist hung the painting number 30. When it struck 4 pm, he hung painting number 240 and when it struck 7:30 pm, he hung painting number 315.

Can you determine, which painting number will he hang when the time is 9:20 pm?

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

how come the second man dies?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

The Federal bank of London is abducted by the robbers. The head of the robbers asked the cashier to empty their money vault to them and when suddenly cashier got a call from her father. To avoid any suspicion, the robber asked the cashier to pick the call and reply her father in the shortest manner possible.

The cashier told her father "Is there an emergency father, Call me when you are free and I will help you in your furnishing" and then the cashier hung up the phone.

After 10 minutes, police arrived at the crime scene.

How did the police know about the robbery?

It is deaf, Dumb and Blind!!!

Still, always tells the truth. What is it?

Can you find out the remainder when 3^300 is divided by 5?

I can be made.
I can be cracked.
I can be told.
I can be played.

Who am I?

1 dollar = 100 cent
= 10 cent x 10 cent
= 1/10 dollar x 1/10 dollar
= 1/100 dollar
= 1 cent

=> 1 dollar = 1 cent

solve this tricky problem?