You tour the globe for 365 days with 27 stops in total. You choose two numbers. A number n means n stops of n days each, that is n x n days. The two numbers give 27 stops in total and 365 days in total. What is the larger of the two numbers? Answer with a natural number.
Seven straight lines are drawn inside a circle, each joining two of 14 spots on the circle, so that every spot is used once. The most interior intersections possible is 21. Using the same rule (every line joins two spots and every spot is used once), how many spots are required before 10 times this number of intersections, that is 210, is possible? Answer with a natural number.
In my fish tank I have 25 zebra fish. The male fish have 15 stripes each and the female fish have 45 stripes each. If I take out two-thirds of the female fish, how many stripes in total are left in the tank? Answer with a natural number.
The first pair of figures is related in a certain way. Which option completes the second pair in the same way? Choose from the options labelled in the figure.