In this task, you need to provide the correct option for a given problem from the provided options.
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Question: Problem: if 0.4 of a number is equal to 0.06 of another number , the ratio of the numbers is : 
Options: a ) 2 : 3 , b ) 3 : 4 , c ) 3 : 20 , d ) 20 : 3 , e ) 22 : 1

Answer: c


Question: Problem: a certain business school has 500 students , and the law school at the same university has 800 students . among these students , there are 30 sibling pairs consisting of 1 business student and 1 law student . if 1 student is selected at random from both schools , what is the probability that a sibling pair is selected ? 
Options: a ) 3 / 40000 , b ) 3 / 20000 , c ) 3 / 4000 , d ) 9 / 400 , e ) 6 / 130

Answer: a


Question: Problem: how many prime numbers between 1 and 100 are factors of 210 ? 
Options: a ) 5 , b ) 4 , c ) 3 , d ) 2 , e ) 1

Answer:
b