Posted by **Ian** on Monday, April 15, 2013 at 3:12am.

Consider a digital clock. The first time after midnight when the three digits are all prime numbers is 2:22 am. What is the last time before 10:00 am, when the three digits on the clock are all prime numbers?

Details and assumptions

If you determine that the time is 4:23 am, type in 423 as your numerical answer.

- MAths -
**Prem Singh**, Monday, April 15, 2013 at 7:51am
757

## Answer this Question

## Related Questions

- maths - At what time do the digits of a digital clock have the greatest sum? The...
- maths - At what time do the digits of a digital clock have the greatest sum? The...
- math - Consider all three-digit numbers that are greater than the sum of the ...
- Algebra - Consider all three-digit numbers that are greater than the sum of the ...
- math - Consider all three-digit numbers that are greater than the sum of the ...
- Maths - The Sentosa High School's telephone number is an eight digit number. The...
- maths - my number is less than 100 one more than a multiple of 3 one of its ...
- maths - I am a three-digits no multiple of 50, my first two digits are even and...
- Math - Mr. Digit wanted to assign a number to each student in his class. He ...
- 4th grade - Mr. Digit wanted to assign a number to each student in his class. He...