If S is the set of positive integers that are multiples
of 7, and if T is the set of positive integers that are multiples of 13, how many integers are in the intersection of S and T?
A. None
B. One
C. Seven
D. Thirteen
E. More than thirteen
2006-09-15 20:34:40 · 4 answers · asked by oriedo_droidpower 2 in Science & Mathematics ➔ Mathematics
E - in fact, there are infinitely many of them (specifically, all the multiples of 91).
2006-09-15 20:42:11 · answer #1 · answered by Pascal 7 · 0⤊ 0⤋
Any number of the form n*7*13 will be both a multiple of 7 and a mutiple of 13, therefore there are an infinite number of them.
2006-09-15 20:54:05 · answer #2 · answered by gp4rts 7 · 0⤊ 0⤋
e. of course, it is infinite and it is not only more than 13 but it may not be counted anymore
2006-09-15 20:48:39 · answer #3 · answered by ricorig 2 · 0⤊ 0⤋
A
2006-09-18 17:50:56 · answer #4 · answered by Kyle S 1 · 0⤊ 0⤋