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Test Ten: Answers1. C; the triangle on the right goes to the top, and the othertwo triangles stay at the bottom but change round.2. OQSV; it goes in the sequence OpQrStuV; the others goin the sequence NoPqrStU3. jaw4. 3; 5 × 3 = 15, 6 × 2 = 12 and 15 – 12 = 3. Similarly7 × 3 = 21, 4 × 5 = 20 and 21 – 20 = 15. on second thoughts6. 647; its digits total 17. The digits of all the other numberstotal 21.7. F; the square originally on the right is moving from rightto left at each stage.8. halibut9. 105; 2 + 8 = 10, 2 + 3 = 5192