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

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

Count the number of lines in the image below ?

Can you solve the rebus below?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

100 prisoners are stuck in the prison in solitary cells. The warden of the prison got bored one day and offered them a challenge. He will put one prisoner per day, selected at random (a prisoner can be selected more than once), into a special room with a light bulb and a switch which controls the bulb. No other prisoners can see or control the light bulb. The prisoner in the special room can either turn on the bulb, turn off the bulb or do nothing. On any day, the prisoners can stop this process and say "Every prisoner has been in the special room at least once". If that happens to be true, all the prisoners will be set free. If it is false, then all the prisoners will be executed. The prisoners are given some time to discuss and figure out a solution. How do they ensure they all go free?

Replace the question mark with the correct number.

2 + 2= 4
3 + 3= 18
4 + 4= 48
5 + 5= ?

I am quite hot but become too cold if you remove the first two letters. What am I?

I’m tall when I’m young, and I’m short when I’m old. What am I?

All of the flowers I have are orchids except two. All of the flowers I have are hibiscuses except two. All of the flowers I have are roses except two.

Can you tell me how many flowers I have?