Every hour the number of bacteria in a sample doubles. If the original number of bacteria is 100, and 50 bacteria are removed every two hours, after five hours, there areकिसी सैम्पल में प्रति घंटे बैक्टीरिया की संख्या दोगुनी हो जाती है। यदि बैक्टीरिया की मूल संख्या 100 है और प्रत्येक दो घंटे के बाद 50 बैक्टीरिया हटाए जाते हैं, तो पाँच घंटे के बाद उनकी संख्या होगी:
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Correct answer: B. 2700 bacteria2700 बैक्टीरिया
Explanation
Start 100. 1st hour: 200. 2nd hour: 400, then 50 removed → 350. 3rd hour: 700. 4th hour: 1400, then 50 removed → 1350. 5th hour: 2700. So after five hours there are 2700 bacteria.आरंभ 100। पहला घंटा: 200। दूसरा घंटा: 400, फिर 50 हटाए गए → 350। तीसरा घंटा: 700। चौथा घंटा: 1400, फिर 50 हटाए गए → 1350। पाँचवाँ घंटा: 2700। अतः पाँच घंटे बाद 2700 बैक्टीरिया होंगे।More Mathematical Reasoning and Aptitude questions
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