nov 22

Solving some equations.

How A, B, C pay $1 each to the bus driver who has no change, having only $2, $3 and $4 dollar coins.

Cross 8 digits from 13571357135 so that the remaining number is the largest.

Homework:

1. Find, how many candies are in square and in round boxes for each of the cases:
• ▢+▢+◯=13;         ▢ +▢+◯+◯+◯=19;
• ▢ +▢+▢+◯=15;  ▢ +◯+◯+◯=21;
• ▢ +▢+▢+◯=6;    ▢ +◯+◯+◯=18;
2. Write these Mayan numbers in our common (Arabic) notation: