Calculate A*B-C-D
Look at the series (7, 4, 5, 12, 45, D, 1329, 9300, 74397, C, B, A, ...), determine the pattern, and find the unknown values (A, B, C and D) and calculate A*B-C-D!Correct answers: 19
The first user who solved this task is Nílton Corrêa de Sousa.
#brainteasers #math

Ugliest baby
A woman gets on a bus with her baby. The bus driver says: ''Ugh, that's the ugliest baby I've ever seen!'' The woman walks to the rear of the bus and sits down, fuming. She says to a man next to her: ''The driver just insulted me!''
The man says: ''You go up there and tell him off. Go on, I'll hold your monkey for you.''