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

I am something people love or hate. I change peoples appearances and thoughts. If a person takes care of them self I will go up even higher. To some people I will fool them. To others I am a mystery. Some people might want to try and hide me but I will show. No matter how hard people try I will Never go down. What am I?

Can you name some countries which do not have the alphabet 'A' in them?

What has lots of eyes, but can’t see?

Replace the question mark with the correct number.

Why is Saturday stronger than Monday?

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

I am a five-letter word and comprises two different vowels and three same consonants. I am so strong that I can spoil your entire work.

Can you find out who am I?

Christina is older than Kareena and Karishma. Katrina is older than Karishma and younger than Kareena. If Kareena has a brother named John, who is older than Christina, who's the youngest?

In The 1st month of this year(the year 2013), I noticed that the date 13-1-13 (13 January 2013) is special.

This date is special as:

Date * Month = Year.

Can you figure out which year of this century has a maximum number of such dates?