Daily Brain Teasers for Friday, 31 July 2020
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Would you like me to be your friend?
Kathy began a job as an elementary school counselor and she was eager to help.
One day, during recess, Kathy noticed a young girl standing by herself on one side of the playing field while the rest of the kids were playing a game of soccer.
A while later, Kathy walked over to the young girl and offered, "Would you like me to be your friend?"
The girl looked at Kathy suspiciously, then said hesitantly, "Okay, I guess so..."
"Why are you standing here all alone?" asked Kathy.
"Because," the little girl said with great exasperation, "I'm the goalie!"
MAGIC SQUARE: Calculate A*B-CThe aim is to place the some numbers from the list (15, 17, 24, 28, 30, 37, 41, 43, 50, 60, 79) into the empty squares and squares marked with A, B an C. Sum of each row and column should be equal. All the numbers of the magic square must be different. Find values for A, B, and C. Solution is A*B-C.
Lunar autoIn 1971, Dave Scott became the first person to drive a vehicle on the Moon - the battery-powered Lunar Rover (LRV) - as part of the Apollo 15 mission to the mountainous Hadley-Apennine region. This LRV, the first to be carried on an Apollo mission, built by Boeing, weighed 460 lb (209 kg) and folded into a space 5 ft by 20 in (1.5 m by 0.5 m). Each wheel was independently driven by ¼ horsepower (200 W) electric motor. The astronauts could travel further from their landing site and sample a wider variety of lunar materials. The car travelled 17.4 miles (28 km) and collected about 168 pounds (76 kg) of lunar materials to return to Earth. Shepard and Mitchell of the previous Apollo 14 mission walked about 2.5 miles (4 km), hauling their scientific gear in a two-wheeled cart .«[Image: Lunar Rover Vehicle driven by Dave Scott in the first lunar surface extravehicular activity at the Hadley-Apennine landing site.]