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: 1 , 3,5 , 7,9 , . . 50 find term of sequnce for this . 
Options: a ) 1356 , b ) 1557 , c ) 1688 , d ) 1700 , e ) 2500
[A]: e


[Q]: Problem: a is the hundreds digit of the 3 digit integer x , b is the tens digit of x , and c is the units digit of x . 4 a = 2 b = c , and a > 0 . what is the difference between the two greatest possible values of x ? tip : dont stop till you have exhausted all answer choices to arrive at the correct one . 
Options: a ) 124 , b ) 297 , c ) 394 , d ) 421 , e ) 842
[A]: a


[Q]: Problem: what is the average of 1200 , 1300 , 1400 , 1510 , 1520 , 1530 , and 1200 ? 
Options: a ) 1360.47 , b ) 1355.8 , c ) 1380 , d ) 1350 , e ) 1333
[A]:
c