Which of the following is closest to one million $\left(10^{6}\right)$ seconds?
(A) 1 day
(B) 10 days
(C) 100 days
(D) 1 year
(E) 10 years
Solution 1

In one minute, there are 60 seconds.

In one hour, there are 60 minutes, so there are $60 \times 60=3600$ seconds.

In one day, there are 24 hours, so there are $24 \times 3600=86400$ seconds.

Therefore, $10^{6}$ seconds is equal to $\frac{10^{6}}{86400} \approx 11.574$ days, which of the given choices is closest to 10 days.

## Solution 2

Since there are 60 seconds in one minute, then $10^{6}$ seconds is $\frac{10^{6}}{60} \approx 16666.67$ minutes.

Since there are 60 minutes in one hour, then 16666.67 minutes is $\frac{16666.67}{60} \approx 277.78$ hours.

Since there are 24 hours in one day, then 277.78 hours is $\frac{277.78}{24} \approx 11.574$ days, which of the given choices is closest to 10 days.

ANSWER: (B)