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

Q: Problem: the ratio of 2 numbers is 4 : 6 and their h . c . f . is 8 . their l . c . m . is ? 
Options: a ) 20 , b ) 24 , c ) 52 , d ) 96 , e ) 60

A: d
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Q: Problem: how many prime numbers between 1 and 100 are factors of 67830 ? 
Options: a ) 4 , b ) 5 , c ) 6 , d ) 3 , e ) 2

A: c
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Q: Problem: in what ratio water be mixed with milk costing rs . 12 per liter to obtain a mixture worth of rs . 8 per litre ? 
Options: a ) 2 : 7 , b ) 1 : 2 , c ) 2 : 9 , d ) 2 : 2 , e ) 2 : 6

A:
b
****