# MAths

posted by .

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 -

757

## Similar Questions

1. ### math

which of these statements about prime and composite numbers is true?
2. ### Math

Find all the two digit prime numbers neither of whose digits are prime.
3. ### maths

At what time do the digits of a digital clock have the greatest sum?
4. ### maths

At what time do the digits of a digital clock have the greatest sum?
5. ### PROBLEM SOLVING IN MATHEMATICS

there are two prime numbers between 100 and 199 such that the ten digits is a prime number, the ones digit is a prime number and the tens and ones digits taken together are a 2 digit prime number. find the sum of these 2 prime number.
6. ### math

Consider all three-digit numbers that are greater than the sum of the squares of their digits by exactly 543. What are the last three digits of the sum of these numbers?
7. ### Algebra

Consider all three-digit numbers that are greater than the sum of the squares of their digits by exactly 543. What are the last three digits of the sum of these numbers?
8. ### math

Consider all three-digit numbers that are greater than the sum of the squares of their digits by exactly 543. What are the last three digits of the sum of these numbers?
9. ### Math

Using only the digits 2,3,5 and 7 complete the following problems below. 1.Name two things that the numbers 2,3,5,7 have in common 1.All prime numbers 2.What is the smallest possible number that can be written using each of these digits …
10. ### Math

A digital clock shows either 3 or 4 digits at a time. What time do the digits have the greatest sum!

More Similar Questions