A maths symbol is hidden in the below Bar Graph. Can you decipher it?

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?

Spelt forwards I’m what you do every day, spelled backwards I’m something you hate. What am I?

Can you solve the rebus below?

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

A research team went to a village somewhere between the jungles of Africa. Luckily for them, they reached the day when quite an interesting custom was to be performed. The custom was performed once a year as they confirmed and was performed in order to collect the taxes from every male of the region.

The taxes were to be paid in the form of grains. Everyone must pay pounds of grain equaling his respective age. This means a 20-year-old will have to pay 20 pounds of grain and a 30-year-old will pay 30 pounds of grain and so on.

The chief who collects the tax has 7 weights and a large 2-pan scale to weigh. But there is another custom that the chief can weigh only three of the seven weights.

Can you find out the weights of the seven weights? Also, what is the maximum age of the man that can be weighed for the payment of taxes?

Astrology starts with the alphabet A, Biology starts with B, Psychology with P and Limnology with L.

Can you find an "ology" that begins with a P?

What can you catch but never throw?