Subject
Bank Exam
Topic
City Bank Ltd. - Management Trainee Officer - 2018
If the integer A is a multiple of 6, the integer B is a multiple of 3, and A > B > 0, then A2- B2must be multiple of which of the following integers ?
If the integer A is a multiple of 6, the integer B is a multiple of 3, and A > B > 0, then A2- B2must be multiple of which of the following integers ?
ক)
6খ)
8গ)
9ঘ)
10ঙ)
None of theseExplanation
প্রশ্নে বলা হচ্ছে যে, পূর্ণসংখ্যা A হলো 6 এর গুণিতক এবং পূর্ণসংখ্যা B হলো 3 এর গুণিতক । A > B > 0 হলে A 2 - B 2 নিচের কোনটির গুণিতক হবে ? ধরি, A = 6x এবং B = 3x অতএব,A 2 - B 2 = (6x) 2 - (3x) 2 = 36x 2 - 9x 2 = 27x 2 অতএব, (A 2 - B 2 ) = 27x যা শুধু অপশন c) এর 9 দ্বারা বিভাজ্য । অর্থাৎ 9 এর একটি গুণিতক হতে পারে (A 2 - B 2 ).Related questions
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