the largest prime 2- digit number

in a 4-digit number, the ones digit is the possible largest number, the hundreds digit is the smallest odd number and the tens digit is 1 more than the hundreds digit. The thousands digit is the sum of the hundreds and the tens digit. Find the number

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In a 4-digit number, the ones digit is the possible largest number, the hundreds digit is the smallest odd number and the tens digit is 1 more than the hundreds digit. The thousands digit is the sum of the hundreds and the tens digit. Find the number.
Answer: The number is 

In a 4- digit number. The ones digit is the possible  largest number, the hundreds digit is the smaller odd number and the tens digit is 1 more thann the hundreds digit. The thousands digit is the sum of the hundreds and the tens digit. Find the number.

the smallest prime 2 - digit number

if a is the largest prime number less than 1000 , then what is the smallest non - zero natural number b so that a+b is also a prime number?

Answer: b = .......

the largest prime number less than 20

A,B,C,D,A+C,B+C,A+D,B+D represent 8 diffirent natural numbers from 1 to 8. If A is the largest number in the number from 1 to 8.Find A

How many natural numbers are there between 100 and 999 that unit-digit and tens-digit equal hundreds-digit ?

write the largest number from the one two and three digit