This week we have a puzzle that's very easy to explain but not as easy to solve. In the equation below each letter represents a different digit, and all you have to do is work out which letter is which digit to make the sum correct.
ABCDE x A = EEEEEE
Looking at the E there are not that many digits that could be apart from 5, so the result of the sum is most likely 555555.
The single digit factors of 555555 are 3, 5 and 7. A can't be 5 as we think E is 5, and 555555 / 3 = 185185, a six-digit number.
555555 / 7 = 79365 a five-digit number with five different digits ending in 5, so the answer is . . .
79365 x 7 = 555555