 
 <translate> Question: In the expression 51840/x^4, for which of the following values of x will the expression NOT be an integer?
Options:
(A) 1/2
(B) 1
(C) 2
(D) 3
(E) 5
Stream-of-consciousness: We can straightaway eliminate A & B, since the expression will always yields an integer for those values
Out of C, D, and E. Let us consider option E. 51840 has only one trailing zero and tens digit is not 5, so It has just one 5 in it. But for the expression to be an integer numerator should have 5^4. <hau> Tambaya: A cikin magana 51840/x ^ 4, ga abin da daga cikin wadannan dabi'u na x za su yi magana ba za a wani lamba? Zaɓuɓɓuka: (A) 1 da rabi (B) 1 (B) 1 (B) 1 (C) Na biyu (D) 3 (E) 5 (E) 5 (E) 5 Tsarin hankali: Za mu iya kawar da A & B kai tsaye, tunda kalmar koyaushe za ta ba da cikakkiyar lamba don waɗannan ƙimar Daga C, D, da kuma E. Bari mu yi la'akari da wani zaɓi E. 51840 yana da kawai daya trailing sifili da kuma goma lambobi ne ba 5, don haka yana da kawai daya 5 a cikinta. Amma don wannan magana ta zama lamba mai cikakke mai lissafi ya kamata ya zama 5^4. 