Can you find a number that lies one third of the distance between 1/3 and 2/3?

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.

You are given with the following sum. Each of the letters can be decoded as a digit. If we tell you that D = 5, then can you solve it entirely?

DONALD
+GERALD
=ROBERT

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

What is it?

What is both possible and impossible at the same time?

O_er_t_o_

Complete the missing letters of the given word.

'S' refers to the number of seconds in a day and 'H' refers to the number of hours in ten years. Which quantity out of these two is greater?

You are mixing a mixture of cement and Sand with five gallons of water. You have a garden hose giving you all the water you need. The problem is that you only have a four-gallon bucket and a seven-gallon bucket and neither has graduation marks. Find a method to measure five gallons.

Which is heavier: a ton of bricks or a ton of feathers?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?