Subject
Bank Exam
Topic
City Bank Ltd. - Probationary Officer - 2016
If x 8 and y 3, it must be true that
If x 8 and y 3, it must be true that
ক)
x + y \( \ge \) 5খ)
x + y \( \le \) 11গ)
x - y \( \ge \) 5ঘ)
x - y \( \le \) 5Explanation
আপনাকে অপশনগুলো থেকে কোনটি অবশ্যই সত্য বা Must be true তা বের করতে হবে । এ ধরনের অসমতার অঙ্কে x এবং y কে যোগ করার জন্য দুটি রাশির অসমতার চিহ্নকে একমুখী করতে হবে । এখন y 3 => - y - 3 [উভয় পক্ষকে (-) দিয়ে গুণ দিলে অসমতায় চিহ্ন উল্টে যায় ] এখন, x 8 - y -3 _____________________ (+) x - y > 8 - 3 x - y > 5 যা অপশন c) তে আছে ।Related questions
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