In a 3 digit prime number , sum of its digits is 5. if the ones and hundreds digits are interchanged, it still remains prime number. what is the original number and what is the changed number
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Answer:
The last digit cannot be 1.
Step by step explanation
The last digit cannot be 1 because it will not satisfy the condition that the digit in the units place is equal to the sum of the other two and if the other digits are interchanged we still have a prime number of three digits. Hence, we are left with only 7 in the units place.
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