98
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It is possible to tessellate a plane with squares, triangles, and hexagons. To tessellate something means to cover it with repeated use of a single shape, without gaps or overlapping.
6
A triangular pyramid. This is one where all the faces are triangles - a three-sided base, from which three triangular faces rise to a single point - the apex.
A product cannot exist of a single number - a product is formed by multiplying two separate numbers.
if the repetition is allowed the there is 6*6*6 possible ways = 216