BRAIN TEASERS

# Find number abc

If 678b4 + 6ac76 = ac9a30 find number abc. Multiple solutions may exist.
The first user who solved this task is Nasrin 24 T.
#brainteasers #math

### Dancing duck

A circus owner walked into a bar to see everyone crowded about a table watching a little show. On the table was an upside down pot and a duck tap dancing on it. The circus owner was so impressed that he offered to buy the duck from its owner. After some wheeling and dealing, they settled for \$10,000 for the duck and the pot.

Three days later the circus owner runs back to the bar in anger, "Your duck is a ripoff! I put him on the pot before a whole audience, and he didn't dance a single step!"

"So?" asked the ducks former owner, "did you remember to light the candle under the pot?"

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### First rocket to reach outer space

In 1949, "the first recorded man-made object to reach extraterrestrial space" was launched from the White Sands Proving Grounds, New Mexico. The two-stage rocket, called "Bumper WAC Corporal" Round 5, had a first stage that was a V-2 rocket (German A-4) rocket with the warhead replaced by a launching compartment. After the V-2 reached its highest altitude, the second stage was launched having received its "bump" toward outer space from it. From its mount in the nose cone a modified "WAC Corporal" sounding rocket which completed the flight. It was the first to carry telemetry transmitting technical information to groud stations, including high-altitude temperature measurements. It reached a record speed of 5,150 mph and a record altitude of 244 miles.«
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