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Alyssa Wu

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last 3 solved tasks
Which number replaces the question mark?
Can you find out how many matches are placed in the picture?
Which number is missing?

Light theory

In 1827, William Rowan Hamilton presented his Theory of Systems of Rays at the Royal Irish Academy in Dublin. Although he was still an undergraduate, only 21 years old, his work is one of the important works in optics, for it provided a single function that brings together mechanics, optics and mathematics. It led to establishing the wave theory of light, which gives that light is a form of energy that travels in waves.

The supervisor for the Union O...

The supervisor for the Union Of Road Construction Workers called the meeting to order.
"Men -- we've agreed on a new deal with the state. We'll no longer have to work four days a week!"
"HOORAY!!!" the crowd cheered.
"We'll quit work at 4PM and not 5PM!"
"HOORAY!!!" the crowd roared.
"We don't have to be in until 11AM instead of 10AM!"
"HOORAY!!!" the crowd thundered.
"And now, even though 99% of the roads in the country are blocked by orange barrels, we'll only have to work on Wednesdays!!"
Silence.
A voice from the back of the room asks, "You mean, EVERY Wednesday?"
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