What does this mathematical rebus means ?

Find the combined weight of the Cat, Dog and Rabbit in the given picture.

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.

In a school, there are four subjects. Seventy percent of students study English, seventy five percent of students study Science, eighty five percent of students study Mathematics and eighty percent of students study Spanish.

Can you calculate the percentage of students that study all four subjects?

How many points are there on the globe where, by walking one mile south, then one mile east and then one mile north, you would reach the place where you started?

Women do it once a year after they turn 19 but men get to do it only once in a lifetime. What is it?

I have branches, but no fruit, trunk or leaves. What am I?

I am sure no one can have two things for dinner. what are they?

As shown in the image, the nine Dogs are square fenced. By constructing just two square fences can you make sure that two Dogs cannot meet each other without crossing the fence?

You have two buckets - one holds exactly 5 gallons and the other 3 gallons. How can you measure 4 gallons of water into the 5 gallon bucket?

(Assume you have an unlimited supply of water and that there are no measurement markings of any kind on the buckets.)