The question shapes are in the upper part of the figure and the suggested answers A, B and C are in the lower row. Which suggested answer shares a feature in common with the question shapes? Choose from the options labelled in the figure.
The question shapes are in the upper part of the figure and the suggested answers A, B and C are in the lower row. Which suggested answer shares a feature in common with the question shapes? Choose from the options labelled in the figure.
The question shapes are in the upper part of the figure and the suggested answers A, B and C are in the lower row. Which suggested answer shares a feature in common with the question shapes? Choose from the options labelled in the figure.
A row of 21 paper dolls is cut into three groups (left, middle, right, each at least one doll) so that the left group is k times larger than the middle group and the middle group is also k times larger than the right group, with the same whole number k. Find the sum of all possible values of k. Answer with a natural number.