In this task, you need to provide the correct option for a given problem on probability from the provided options.

Problem: two cards are drawn together from a pack of 52 cards the probability that one is the spade and one is a heart is ? 
Options: a ) 85 / 852 , b ) 45 / 69 , c ) 18 / 456 , d ) 13 / 102 , e ) 23 / 125
d

Problem: when tossed , a certain coin has an equal probability of landing on either side . if the coin is tossed 5 times , what is the probability that it will land on the same side each time ? 
Options: a ) 1 / 6 , b ) 1 / 8 , c ) 1 / 12 , d ) 1 / 16 , e ) 1 / 32
d

Problem: how many positive integers less than 600 can be formed using the numbers 1 , 2 , 3 and 5 for the digits ? 
Options: a ) 48 , b ) 52 , c ) 66 , d ) 68 , e ) 84

e