I have eight fingers and two thumbs but I do not live. What Am I?

I want to fill my bucket using both cold and hot water.
I have two taps for both cold and hot water. The hot water tap fills the bucket in exact 6 hours and the cold water tap fills the bucket in exact 4 hours.
I turn both of them simultaneously but I forgot to turn off another tap which removes the water out of the bucket. This tap can empty the bucket in 12 hours.

How Long will it take to fill the bucket?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

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

What is it?

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

I know a nine-letter word having only one vowel.
Do you ?

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

The first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire world signifies a great woman. What is the word?

What is the value of 1/2 of 2/3 of 3/4 of 4/5 of 5/6 of 6/7 of 7/8 of 8/9 of 9/10 of 1000?

Count the number of lines in the image below ?