 
 <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. <ibo> Ajụjụ: N'okwu 51840/x^4, maka ole n'ime uru x ndị a na-esote okwu ahụ agaghị abụ integer? Nhọrọ: (A) 1/2 (B) 1 (C) 2 (D) 3 (E) 5 Mmetụta uche: Anyị nwere ike wepụ A & B ozugbo, ebe ọ bụ na okwu ahụ ga-enye ọnụọgụgụ maka ụkpụrụ ndị ahụ N'ime C, D, na E. Ka anyị tụlee nhọrọ E. 51840 nwere naanị otu trailing efu na iri digit bụghị 5, ya mere Ọ nwere naanị otu 5 na ya. Ma maka okwu ahụ ka ọ bụrụ ọnụọgụgụ, ọnụọgụgụ kwesịrị inwe 5 n'elu 4. 