instruction:
In this task, you need to provide the correct option for a given problem on probability from the provided options.
question:
Problem: a question paper has 2 parts , a & b , each containing 8 questions . if a student has to choose 8 from part a & 4 from part b , in how many ways can he choose the questions ? 
Options: a ) 110 , b ) 70 , c ) 120 , d ) 130 , e ) 140
answer:
b


question:
Problem: on a ranch , a rancher can place a loop of rope , called a lasso , once in every 3 throws around a cow ’ s neck . what is the probability that the rancher will be able to place a lasso around a cow ’ s neck at least once in 3 attempts ? 
Options: a ) 1 / 3 , b ) 5 / 9 , c ) 7 / 9 , d ) 19 / 27 , e ) 23 / 27
answer:
d


question:
Problem: in 15 year ’ s time the combined age of my 4 brothers will be 107 . what will it be in the 6 year ’ s time ? 
Options: a ) 61 , b ) 78 , c ) 71 , d ) 68 , e ) 94
answer:

c