Brainteaser Riddle #10: Test Your Mental Sharpness

We love a good riddle - it gets your brain working and is the perfect midday distraction! We have collected a series of challengeing riddles to test your mental acuity! Test yourself and see if you can figure it out without peeking at the answer.

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Could you work it out? Here is the answer: 

One. If he combines all his haystacks, they all become one big stack.

Test your friends and loved ones by SHARING this riddle now! And don't forget this is the final in a series so if you missed any of the others, go and check them out!