# Impostor

In each item you need to find an element which does not fit in the given set.
Correct answer will be awarded with 1 point, and wrong answer will be penalized with 0.5 point.
Empty answer brings 0 points. You can find a preliminary norm, here.

You need to choose at most one answer per item.
You can send your explanations, although it is not necessary. Enjoy the test!!!

1)

2)

3) 2, 3, 4, 5

4) -1, 0, 1

5) $$\sqrt{2},2,\pi$$

6) $$a+b,a-b,a\cdot b$$

7) 1, 3, 4, 5

8) 7, 8, 9, 10

9) mouse, worm, dog, spider

10) river, lake, sea

11) tiger, lion, elephant, leopard

12) father, mother, son

13) x, y, 5

14) $$\ln,\sin,\cos$$

15) Europe, Russia, Vietnam

16) ball, pyramid, sphere

17) car, bicycle, train

18) bed, chair, table

19) fire, light, corrosion

20) length, volume, distance

21) grass, bean, strawberry

22) a, b, c, č

23) $$\frac12,\frac84,\frac33$$

24) a, b, c, d

25) $$a^2,\sqrt{a},\frac1a,e^a$$

26) do, go, la, mi

27) $$\frac13,\frac23,\frac34,\frac57$$

28) x, x, y, z, z

29) d, g, g, o, o

30) p, q, r, s, t

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