.In the XVII century Lord de Mere, a vivid gambler, asked Pascal, one of the great mathematicians of his time: If a player rolls a die 4 times what should I bet on: a) he rolls at least one 6; or b) he does not roll a 6 at all? What would you bet on?

so for this question I would say a. because it would a 4 in 6 chance or a 0.667 chance

anybody have another way of showing this because I think i might me wrong