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Guess the name of musician

Look carefully caricature and guess the name of musician.

Correct answers: 38

The first user who solved this task is Donya Sayah30.

#brainteasers #music

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My mother says she never holds...

My mother says she never holds grudges but then will blindside you with something that happened years ago.
Last week she said, "You know, you really hurt me on your birthday."
And I was like, "Which birthday was that?"
So she replied, "The first one. You have a really big head, you know."

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Gilles Personne de Roberval

Born 8 Aug 1602; died 27 Oct 1675 at age 73.French mathematician who developed powerful methods in the early study of integration, writing Traité des indivisibles. He computed the definite integral of sin x, worked on the cycloid and computed the arc length of a spiral. Roberval is important for his discoveries on plane curves and for his method for drawing the tangent to a curve, already suggested by Torricelli. This method of drawing tangents makes Roberval the founder of kinematic geometry. In 1669 he invented the Roberval balance with an articulated parallelogram is now almost universally used for weighing scales of the balance type. He studied the vacuum and designed apparatus which was used by Pascal in his experiments and also worked in cartography

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