I am an odd number. Take away a letter and I become even. What number 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?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

Solve below popular number sequence
314 159 265 358 979 323 846 ?

Find out the missing number in the picture attached:

A and B have a certain number of chocolates with them. If B gives one chocolate to A, they will have an equal number of chocolates. But if A gives one chocolate to B, then A will be left with half the number of chocolates that B has.

Can you find out the number of chocolates they have right now?

Chocolate costs 6 rupees and a Toy costs 5 rupees. If you have 32 rupees in total, how many chocolates and how many Toys can be purchased with that amount?

Our product and our sum always give the same answer. Who are we?

Replace the question mark with the correct number in below Picture:

If we add four times the age of John four years from now to five times his age five years from now we get ten times his current age.

How old will John be two years from now?