ISBN-13: 9781544637945 / Angielski / Miękka / 2017 / 72 str.
ISBN-13: 9781544637945 / Angielski / Miękka / 2017 / 72 str.
Hundred is a square grid of 3 x 3 or 4 x 4, whose cells are to be filled by some digits. The task is to fill additional digits in required cells such that the sum of numbers in each row and each column equals to 100.