The 10 brain teasers where only 'people with a PhD' can get a perfect score

dailyrecord.co.uk:

Brain teasers are a great way to keep your mind sharp and get in the competitive spirit.Tricky quizzes tests are the ultimate challenge to your friends and family to find out who is the sharpest among you.

This set of 10 questions is particularly tough and it's said only people with a PhD can get a perfect score.As reported by the Mirror, these questions were given to 100 college students and no one got more than five correct.

If you're feeling up to the challenge, see well you score in the test of intelligence below.When figuring out these head scratchers from Playbuzz, make sure you don't rush yourself - read each question thoroughly and carefully.

Sometimes, the answer might be staring you right in the face.I am the beginning of everything, the end of everywhere, the beginning of eternity and the end of time and space, what am I?What does a cow have four of, a dog have eight of and you have two of?What always runs but never walks, often murmurs, never talks, has a bed but never sleeps, has a mouth but never eats?What has rivers but no water, forests but no trees, deserts but no sand and mountains but no rocks?Once I'm 24.