OBMEP 2021: Second Phase - Level 1 Exercise 1 On the board, each letter of the word OBMEP represents an integer from 1 to 5. Different letters represent different numbers. Furthermore, each number written on the side of the board is the sum of the values of the letters on the board. corresponding horizontal line. A) Find the value of the letter O. Response: 1 When we add the values from the first line, we have
OBMEP 2021: Second Phase - Level 1 Exercise 1 Mariana has a set of 15 pins, with 5 black, 5 white and 5 gray. Pins of the same color are worth the same number of points. The score obtained in a play is the sum of the points of the pins corresponding to the knocked down pins. In one play, Mariana scored 10 points by knocking down two black pegs. In another play, she scored 12 points by knocking down a black and a white peg. In a third move, Mariana scored 55 points by knocking down three black, one white and three gray pins.