instruction:
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'.
question:
Problem: the average of 13 numbers is 60 . average of the first 7 of them is 57 and that of the last 7 is 61 . find the 8 th number ? 
Options: a ) 43 , b ) 30 , c ) 35 , d ) 45 , e ) 50
answer:
a


question:
Problem: find the least number which when divided by 18,32 , 48,52 leaves remainder 14,28 , 44,48 respectively . 
Options: a ) 2845 , b ) 3250 , c ) 3740 , d ) 4150 , e ) 5140
answer:
c


question:
Problem: given a + b = 1 , find the value of 2 a + 2 b . two solutions are presented below . only one is correct , even though both yield the correct answer . 
Options: a ) 3 , b ) 5 , c ) 4 , d ) 2 , e ) 1
answer:

d