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

- math - which of these statements about prime and composite numbers is true? F)...
- 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 ...
- PROBLEM SOLVING IN MATHEMATICS - there are two prime numbers between 100 and 199...
- Math - Find all the two digit prime numbers neither of whose digits are prime.
- 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 - Using only the digits 2,3,5 and 7 complete the following problems below. ...
- math - Find all the two digit prime numbers neither of whose digits are prime. ...

More Related Questions