Answer:
The number is: 775
Step-by-step explanation:
The prime numbers from 1-9 are: 2,3,5,7
To form the greatest three digit prime number where each of the digits is prime and the sum of all three digits is also prime:
- we have to start the number from 7 as the greatest prime number is 7.
- the next digit has to be also 7 so that the number remains bigger.
- if for the ones digit we take prime number seven than the sum of all the three digits will not be prime ( as 7+7+&=21 which is not a prime number).
so we take the digit 5 and the sum will be 19(7+7+5) which is a prime
number.
Hence the number is 775.
I don’t wanna be useless but photo-calculator should help.( app)
Answer: 10a^2 - 25 + 5b
Step-by-step explanation: Only you have to elevate all the numbers and expressions to the potence 2
1:Correct
2: 8 / 2 = 4
3: 6 / 2 = 3
4: 6*1*6 = 36
5: 0/6 + 6 = 6
6: 5+3+1+9 = 18