Find number abc
[5180] Find number abc - If 80b87 - cba67 = a71a0 find number abc. Multiple solutions may exist. - #brainteasers #math - Correct Answers: 48 - The first user who solved this task is Djordje Timotijevic
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Find number abc

If 80b87 - cba67 = a71a0 find number abc. Multiple solutions may exist.
Correct answers: 48
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math
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Lost boots

There was a little boy in kindergarten. At the end of one cold winter day, when all the other children were leaving, the teacher found him crying, so she asked him what was wrong.

He sobbed, "I can't find my boots."

The teacher looked around the classroom and saw a pair of boots. "Are these yours?"

"No, they're not mine," said the little boy, shaking his head.

The teacher and the boy searched all over the classroom for his boots.

Finally, the teacher gave up, "Are you SURE those boots are not yours?"

"I'm sure," the boy sobbed, "mine had snow on them."

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Leap second

In 1972, the first leap second day, one second was added to the world's time in order to keep the super-accurate atomic clocks in step with the Earth's rotation. Since the adoption of this system in 1972, firstly due to the initial choice of the value of the second (1/86400 mean solar day of the year 1900) and secondly to the general slowing down of the Earth's rotation, it has been necessary to add over 20 seconds to Coordinated Universal Time (UTC).[Image: part of the master clock system at the U.S. Naval Observatory.]
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