Here are the answers with explanations for each statement:
-
True - A regular hexagon can inscribe a square whose diagonal is equal to the hexagon's side. In this case, a square with a diagonal of approximately 14.14 cm (which fits within the hexagon that has a side of 10 cm) can fit inside the hexagon.
-
True - Drawing two lines through the center of an octagon can indeed create six identical triangles.
-
False - The pattern in the sequence appears to be increasing with each term as follows: 2 (2), 6 (4), 14 (8), 30 (16), but the differences between terms are not constant. The next number would actually be 62, not 64.
-
True - If Robert is taller than John and Charlie is taller than Robert, it logically follows that John is the shortest of the three.
-
True - The sum of all odd numbers from 1 to 15 (i.e., 1, 3, 5, 7, 9, 11, 13, 15) equals 64, which is an even number.
-
False - If each of the 7 persons shakes hands with each of the other 6 persons, then the total number of handshakes can be calculated using the combination formula \(C(n, 2)\) where \(n\) is 7. This gives \(C(7, 2) = 21\) handshakes, not 42.
-
True - Three congruent regular hexagons can overlap and form more than 6 distinct areas or compartments.
-
True - It is possible to walk through all five doors without repeating, depending on the arrangement of doors. You can visualize it as a graph where each door is a vertex and each walk creates edges.
Summary of answers: 31. True 32. True 33. False 34. True 35. True 36. False 37. True 38. True