 <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. <yor> Ìbéèrè: Nínú gbólóhùn 51840/x^4, fún èwo nínú àwọn iye x tí ó wà nísàlẹ̀ yìí ni gbólóhùn náà kò ní jẹ́ iye tó pé? Àwọn àyè: (A) Ìlàjì (B) 1 ì (C) Ì2 (D) 3 (E) 5 Ìṣàn-ọkàn: A lè yọ A & B kúrò lẹ́sẹ̀kẹsẹ̀, níwọ̀n ìgbà tí gbólóhùn náà yóò máa fún wa ní àpapọ̀ iye fún àwọn iye wọ̀nyí Lati C, D, ati E. Jẹ ki a ro aṣayan E. 51840 ni o ni nikan ọkan trailing odo ati awọn mẹwa oniye ni ko 5, ki o ni o kan ọkan 5 ninu rẹ. Àmọ́ kí àpapọ̀ náà tó lè jẹ́ àpapọ̀ iye, ó yẹ kí ó ní 5 sí ẹ̀ẹ̀kẹrin. 