Calculate A*B-C-D
Look at the series (5, A, C, 43, 73, 115, 171, D, 333, 443, 575, B, ...), determine the pattern, and find the unknown values (A, B, C and D) and calculate A*B-C-D!Correct answers: 22
The first user who solved this task is Nílton Corrêa de Sousa.
#brainteasers #math

Rowing Your Boat
Two blondes were driving along a road by a wheat field when they saw a blonde in the middle of the field rowing a row boat.
The driver blonde turned to her friend and said "You know - it's blondes like that that give us a bad name!"
To this, the other blonde replies "I know it, and if I knew how to swim, I'd go out there and drown her."