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'.

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
b

Problem: a batsman makes a score of 100 runs in the 11 th inning and thus increases his average by 5 . find his average after 11 th inning . 
Options: a ) 40 , b ) 50 , c ) 62 , d ) 45 , e ) 56
b

Problem: a student chose a number , multiplied it by 2 , then subtracted 180 from the result and got 104 . what was the number he chose ? 
Options: a ) 90 , b ) 100 , c ) 120 , d ) 142 , e ) 200

d