Jigsaw forced mahrez and vardy to play the game of death.
jigsaw placed 11 marbles at the table and asked mahrez and vardy to pick marble(s) one by one with the following rules:
1. you need to pick at least one marble.
2. you can't pick more than five marbles.
the one that picks the last marble will die.
mahrez to start the game.
how many marbles must mahrez pick in order to make sure that he came out from the game alive?

"curse these trig-loving pirates! " devora mutters as she looks at the map. then, after thinking for a moment, she walks back to the entrance of the secret cave, measuring 48 meters along the way. after performing a calculation, devora walks back to the empty treasure, faces the entrance, and turns a certain number of degrees to her left before walking 89 meters to the treasure. supposing that the angle at the cave entrance is acute and that devora's calculations were correct, how many degrees did she turn?