Calculate the number 621
NUMBERMANIA: Calculate the number 621 using numbers [7, 5, 2, 5, 31, 138] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.Correct answers: 11
The first user who solved this task is Nílton Corrêa de Sousa.
#brainteasers #math #numbermania

A trip to the movies...
For the first time in many years, an old man traveled from his rural town to the city to attend a movie.
After buying his ticket, he stopped at the concession stand to purchase some popcorn. As he handed the attendant $1.50, he couldn't help but comment, "The last time I went to the movies, popcorn was only 15 cents."
"Well, sir," the attendant replied with a grin, "You're really going to enjoy yourself this evening. We have sound now."