亚洲精品不卡AV在线播放|国产性爱无码高清视频|国产成人 ,97人人色,国产免费一区二区三区,日本一区二区在线

To solve the problem, we can use the following reasoning:

Step 1: Define Variables

Let’s denote:

• Total people = 100 (each has exactly one pet: dog or cat).
• Total males = 50, total females =50.
• Male dog owners =30 (given).
• Assume total dog owners = total cat owners =50 (since 100 people, this is a standard implicit assumption in such problems to balance the counts).

Step 2: Calculate Female Dog Owners

Total dog owners =50 → Female dog owners = Total dogs - Male dogs =50-30=20.

Step3: Calculate Female Cat Owners

Total females =50 → Female cat owners = Total females - Female dog owners =50-20=30.

Answer: 30

（免責(zé)聲明：本文為本網(wǎng)站出于傳播商業(yè)信息之目的進(jìn)行轉(zhuǎn)載發(fā)布，不代表本網(wǎng)站的觀點(diǎn)及立場。本文所涉文、圖、音視頻等資料的一切權(quán)利和法律責(zé)任歸材料提供方所有和承擔(dān)。本網(wǎng)站對此資訊文字、圖片等所有信息的真實(shí)性不作任何保證或承諾，亦不構(gòu)成任何購買、投資等建議，據(jù)此操作者風(fēng)險(xiǎn)自擔(dān)。） 本文為轉(zhuǎn)載內(nèi)容，授權(quán)事宜請聯(lián)系原著作權(quán)人，如有侵權(quán)，請聯(lián)系本網(wǎng)進(jìn)行刪除。