The sum of my ones digit and tens digit is 10. However, my ones digit is greater than my tens digit , I am a prime number less than 30. What number am I?
this is quite similar to the previous post.
What are the 2-digit primes less than 30?
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To find the number that satisfies the given conditions, we need to look for a prime number less than 30 in which the sum of the ones digit and tens digit is 10, and the ones digit is greater than the tens digit.
Let's go through the prime numbers less than 30 and check which numbers meet these criteria:
- The prime numbers less than 30 are: 2, 3, 5, 7, 11, 13, 17, 19, 23, and 29.
- For the number 2, the sum of the ones and tens digit is 2, which does not fulfill the condition that the sum is 10.
- For the number 3, the sum of the ones and tens digit is 3, which does not fulfill the condition that the sum is 10.
- For the number 5, the sum of the ones and tens digit is 5, which does not fulfill the condition that the sum is 10.
- For the number 7, the sum of the ones and tens digit is 7, which does not fulfill the condition that the sum is 10.
- For the number 11, the sum of the ones and tens digit is 1 + 1 = 2, which does not fulfill the condition that the sum is 10.
- For the number 13, the sum of the ones and tens digit is 1 + 3 = 4, which does not fulfill the condition that the sum is 10.
- For the number 17, the sum of the ones and tens digit is 1 + 7 = 8, which does not fulfill the condition that the sum is 10.
- For the number 19, the sum of the ones and tens digit is 1 + 9 = 10, and the ones digit is greater than the tens digit. Therefore, the number must be 19.
Thus, the prime number less than 30 that meets the given conditions is 19.