A colony of 1000 bacteria doubles every 2 hours. How many bacteria are there after 8 hours?
Answer and explanation
Correct answer: A. 16000
- Step 1: In 8 hours there are 4 doublings.
- Step 2: 1000 x 2^4 = 16000.
Answer
16000.
Practise more Mathematics: Sequences and Functions.
Free questions with an explanation for every one, and full timed FUVEST (University of São Paulo Entrance Exam) mock tests.
More Mathematics: Sequences and Functions questions
- For which value of x does f(x) = 2x - 2 equal zero?
- A geometric progression has first term 5 and ratio 3. What is the term in position 7?
- A geometric progression has first term 1 and ratio 2. What is the term in position 6?
- For which value of x does f(x) = 5x - 5 equal zero?
- What is the sum of the roots of x^2 - 7x + 10 = 0?
- What is the sum of the infinite series 8 + 2 + 1/2 + ... in which each term is 1/4 of the previous one?