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Find number abc

If 7babc + 9a2bc = 1cb272 find number abc. Multiple solutions may exist.

Correct answers: 22

The first user who solved this task is Nasrin 24 T.

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Follow in my footsteps...

On the way to preschool, a doctor had left his stethoscope on the car seat, and his little girl picked it up and began playing with it.

"Be still, my heart," thought the doctor. "My daughter wants to follow in my footsteps!"

Then the child spoke into the instrument, "Welcome to McDonald's. May I take your order?"

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Jacobus Cornelius Kapteyn

Died 18 Jun 1922 at age 71 (born 19 Jan 1851).Dutch astronomer who used photography and statistical methods in determining the motions and spatial distribution of stars. Such work was the first major step after the works of William and John Herschel. He tried to solve the questions of space density of stars as a function of distance from the sun, and the distribution of starts according to brightness per unit volume. Some of his results had lasting value, but some were superceded because he had failed to account for the interstellar absorption. In studies using proper motion to determine stellar distances, he discovered stellar motions are not random, as previously thought, but that stars move in two "star streams" (1904). He introduced absolute magnitude and colour index as standard concepts.

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