Bunuel wrote:
The Official Guide For GMAT® Quantitative Review, 2ND EditionA certain population of bacteria doubles every 10 minutes. If the number of bacteria in the population initially was 10^4, what was the number in the population 1 hour later?
(A) 2(10^4)
(B) 6(10^4)
(C) (2^6)(10^4)
(D) (10^6)(10^4)
(E) (10^4)^6
Problem Solving
Question: 22
Category: Arithmetic Operations on rational numbers
Page: 64
Difficulty: 600
GMAT Club is introducing a new project:
The Official Guide For GMAT® Quantitative Review, 2ND Edition - Quantitative Questions ProjectEach week we'll be posting several questions from
The Official Guide For GMAT® Quantitative Review, 2ND Edition and then after couple of days we'll provide Official Answer (OA) to them along with a slution.
We'll be glad if you participate in development of this project:
1. Please provide your solutions to the questions;
2. Please vote for the best solutions by pressing Kudos button;
3. Please vote for the questions themselves by pressing Kudos button;
4. Please share your views on difficulty level of the questions, so that we have most precise evaluation.
Thank you!
ANSWER:
=====
(10^4)
After 10 mins, 2*(10^4)
After 20 mins, 2*(2*(10^4))
After 10 mins,
Bunuel wrote:
The Official Guide For GMAT® Quantitative Review, 2ND EditionA certain population of bacteria doubles every 10 minutes. If the number of bacteria in the population initially was 10^4, what was the number in the population 1 hour later?
(A) 2(10^4)
(B) 6(10^4)
(C) (2^6)(10^4)
(D) (10^6)(10^4)
(E) (10^4)^6
Problem Solving
Question: 22
Category: Arithmetic Operations on rational numbers
Page: 64
Difficulty: 600
GMAT Club is introducing a new project:
The Official Guide For GMAT® Quantitative Review, 2ND Edition - Quantitative Questions ProjectEach week we'll be posting several questions from
The Official Guide For GMAT® Quantitative Review, 2ND Edition and then after couple of days we'll provide Official Answer (OA) to them along with a slution.
We'll be glad if you participate in development of this project:
1. Please provide your solutions to the questions;
2. Please vote for the best solutions by pressing Kudos button;
3. Please vote for the questions themselves by pressing Kudos button;
4. Please share your views on difficulty level of the questions, so that we have most precise evaluation.
Thank you!
ANSWER:
=====
(10^4)
After 10 mins, 2*(10^4)
After 20 mins, 2*2*(10^4)
After 30 mins, 2*2*2*(10^4))
After 40 mins, 2*2*2*2*(10^4)
After 50 mins, 2*2*2*2*2*(10^4)
After 60 mins, 2*2*2*2*2*2*(10^4)
2^6 * (10^4)
Hence, Answer is (2^6)(10^4) = C