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'.

[EX Q]: Problem: find value of x : ( 422 + 404 ) ^ 2 ( 4 422 404 ) = x .
Options: a ) 234 , b ) 267 , c ) 324 , d ) 356 , e ) 577
[EX A]: c

[EX Q]: Problem: find a sum for 1 st 7 prime number ' s ?
Options: a ) 25 , b ) 28 , c ) 58 , d ) 34 , e ) 36
[EX A]: c

[EX Q]: Problem: in how many q ways can a 4 - letter password be chosen , using the letters a , b , c , d , e , and / or f , such that at least one letter is repeated within the password ?
Options: a ) 720 , b ) 864 , c ) 900 , d ) 936 , e ) 1296
[EX A]:
d