Can you count the number of quadrilaterals in the picture below?

What does below rebus means ?

I cannot talk, but I always reply when spoken to. What am I?

Make a sentence consisting of three words that have the whole alphabet.

Can you spot the hidden girl in the picture below?

A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.

A new Engineering building containing 100 offices had just been completed. John was hired to paint the numbers 1 to 100 on the doors. How many times will John have to paint the number nine (9)?

Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?

I don't get anymore wetter, no matter how much rain falls on me.

Three fair coins are tossed in the air and they land with heads up. Can you calculate the chances that when they are tossed again, two coins will again land with heads up?