[計量] 請教一題印度JJ
Given a set ""N1"has five different numbers and "N2" has five different
numbers ans none of them have common numbers. If one is selected from
N1 and one number is selected from N2, then how many different combinations
are possible?
這題印度網站都說是 5*5=25種
但有沒有可能還要位置互換呀 所以我覺得是5*5*2=50
但是網站上重複題也說是25
請各位幫小弟解答一下 感恩
--
◢█◣◢█◣ ∮lassal Yo, buddy! My bro's a handsome guy lo!! ╗
██◥◤██ ╔═══╮╔═══╗╔══╮╗╔══╮╗╔═╗╔╗ ╰ ╭╬╗
ＭＡＧＩＣ ║▄ ║║▄ ║║▄ ║║║▄ ║║║▄║║║ ●） ║║
██████ ║▌ ═ ║║▌ ═╣║▌ ║║║▌ ║║║▌╰╯║ ∕Li' ╰╬╯
██ １i██ ║ ╔═╯║ ═╣║ ║ ║║ ║ ║╰═╮╭╯● 1/2 ║DDD
██ i█ ╚═╝ ╚═══╝╚═╰═╝╚═╰═╝ ╚╝ 〈 ︶ │
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 114.140.6.12
推
11/20 14:46, , 1F
11/20 14:46, 1F
→
11/20 15:52, , 2F
11/20 15:52, 2F
討論串 (同標題文章)
GRE 近期熱門文章
PTT職涯區 即時熱門文章
16
25