When you reverse the digits of the number 14 the number increases by 27, how many other two digits number increases by 27 when their digits are reversed?
25,36,47,58 and 69.
five other numbers
What is the number if it divides exactly by 13 and when you write its digits in reverse order you make a square number. (You get a square number when you multiply a number by itself - 64 is square because it is 8 times 8)
If the digits of a two-digit number are interchanged, the obtained number is 27 more than the original number. The digits of the number are in the ratio of 2 : 1, then
What is the original number?
2 + 47 = 49, 2 x47 = 94 so the digits of the answer are the same but in reverse when you add or multiply 2 and 47.
Can you find other pairs which have answers with digits reversed when added and multiplied?