In this task, you need to answer the given multiple-choice question on the general math. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.

[Q]: Problem: product of two co - prime numbers is 117 . their l . c . m should be
Options: a ) 222 , b ) 117 , c ) 278 , d ) 767 , e ) 298
[A]: b

[Q]: Problem: if a ( a - 2 ) = 2 and b ( b - 2 ) = 2 , where a = b , then a + b =
Options: a ) 1 , b ) 2 , c ) 4 , d ) 46 , e ) 48
[A]: a

[Q]: Problem: in an entrance exam , 3 marks is awarded for every correct answer and ( - 1 ) for every wrong answer . if a student gets 38 marks after attempting all questions , find the number of questions answered correctly if the total questions were 70 .
Options: a ) 38 , b ) 40 , c ) 27 , d ) 43 , e ) 56
[A]:
c