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Test Six: Answers19. 4253; each number swaps round as follows – A B C D(3 4 1 2) to B D C A (4 2 2 3), and so on. However, thethird number, whilst remaining in the same position eachtime, increases by one at each stage.20. B; the arrow moves three circles clockwise at each stage.After it has pointed to a circle, that circle reverses blackand white sections at subsequent stages.21. webbed22. ptomaine23. d. quiver24. incipient, ending25. 5626. 26; consonants 5, vowels 2.27. food: brisket, compote, dariole. ships: carrack, clipper,collier. reptiles: monitor, snapper, saurian.28.ETSET29. 63; there are two 63s.30. chick (16)117