Subject
Bank Exam
Topic
সমন্বিত ৯ ব্যাংক আর্থিক প্রতিষ্ঠান (সিনিয়র অফিসার)-২০.০১.২০২৩
M is a girl and has the same number of brothers as sisters. N is a boy and has twice as many sisters as brothers. M and N are the children of Q. How many children does Q have?
M is a girl and has the same number of brothers as sisters. N is a boy and has twice as many sisters as brothers. M and N are the children of Q. How many children does Q have?
ক)
2খ)
3গ)
7ঘ)
8Explanation
মনে করি, পরিবারে মেয়ের সংখ্যা = x এবং, ছেলের সংখ্যা = y প্রশ্নমতে, x-1 = y.......(i) 2(y-1)=x...... (ii) (i) নং হচ্ছেy এর মান (ii) নং এ বসিয়ে পাই, 2(x-1-1)=x ⇒2(x-2) = x ⇒2x-4 = x ∴ (i) ⇒ 4-1 = y ⇒ 3 = y ⇒ y = 3 Q এর মোট সন্তান = x+y = 4+3 = 7Related questions
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