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Find number abc

If 2a7bb + a97ca = 8a4ca find number abc. Multiple solutions may exist.

Correct answers: 83

The first user who solved this task is Snezana Milanovic.

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Black and White

Attending a wedding for the first time, a little girl whispered to her mother, "Why is the bride dressed in white?"
"Because white is the color of happiness, and today is the happiest day of her life."
The child thought about this for a moment, then said, "So why is the groom wearing black?"

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Carl R. Woese

Born 15 Jul 1928.American microbiologist who recognized the existence of the organisms Archaea as a third domain of life, distinct from the previously recognized two domains of bacteria, and life other than bacteria. On 2 Nov 1977, his identification of methanogens, a form of life dating back some 3.5 billion years, was reported from the University of Illinois. Woese had long studied the evolutionary track of DNA and RNA. In 1976, he was approached by his colleague Ralph Wolfe, who presented a group of methane producing organisms. Woese studied their RNA and recognized their lack of the entire oligonucleotide sequences. Methanogens are found in oxygen-deficient environments, and mostly obtain their energy by reducing CO2 and oxidizing hydrogen, and releasing methane.

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