The year 1978 is such that the sum of the first two digits and the latter two digits is equal to the middle two digits, i.e. 19 + 78 = 97. What is the next year (after 1978) for which this is true?
2307 . 23 + 07 = 30
On my birthday in 2021, my age is equal to the sum of the digits of my birth year. I am less than 100 years old. What could my birth year be?
I am a three digit number. The sum of the first and last digits is equal to 16. The sum of the first two digits is equal to 7. What am I?
A number consists of 3 digits whose sum is 10. The middle digit is equal to the difference of the other two and the number will be increased by 99 if its digits are reversed. What is the square of the number?
