Subject
Bank Exam
Topic
Islami Bank Bangladesh Ltd. PO 2017
The product of two consecutive negative even integers is 24. What is the larger number?
The product of two consecutive negative even integers is 24. What is the larger number?
ক)
- 4খ)
- 6গ)
4ঘ)
6ঙ)
NoneExplanation
Solution: প্রশ্নে বলা হচ্ছে যে, দুটি ক্রমিক ঋণাত্মক জোড় সংখ্যার গুণফল 24 হলে বৃহত্তর সংখ্যাটি কত ? ধরি, দুটি ক্রমিক ঋণাত্মক জোড় সংখ্যার একটি সংখ্যা x; অপর সংখ্যাটি হবে (x - 2). প্রশ্নমতে, x(x - 2) = 24 => x 2 - 2x - 24 = 0 => x 2 - 6x + 4x - 24 = 0 => x (x - 6) + 4 (x - 6) = 0 (x - 6) (x + 4) = 0 এখানে, x - 6 = 0 x = 6 [এটি ঋণাত্মক নয়; কাজেই বাদ ] আবার, x + 4 = 0 => x = - 4 x = - 4 অতএব, বড় সংখ্যাটি হবে - 4.Related questions
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