instruction:
In this task, you need to provide the correct option for a given problem on probability from the provided options.
question:
Problem: a child want to buy 5 new toys . if there are 15 toys that satisfy the child ' s criteria , in how many different ways can the child select the 5 new toys if the order of selection does n ' t matter . 
Options: a ) 210 , b ) 1365 , c ) 3003 , d ) 5005 , e ) 3030
answer:
c


question:
Problem: there are 11 boys and 10 girls in a class . if three students are selected at random , in how many ways that 3 girl & 2 boys are selected ? 
Options: a ) 6600 , b ) 1300 , c ) 6780 , d ) 1976 , e ) 2448
answer:
a


question:
Problem: a bag contains 3 red , 5 yellow and 7 green balls . 3 balls are drawn randomly . what is the probability that the balls drawn contain balls of different colours ? 
Options: a ) 2 / 7 , b ) 3 / 5 , c ) 3 / 13 , d ) 1 / 4 , e ) 7 / 16
answer:

c