Answer:
We know that, in a clock, the hour hand moves from first digit to next three digits by making a right angle. (a) Here, the hour hand moves from 3 to 6. It starts from 3 and covers digits 4, 5 and 6. So, hour hand turned by one right angle. (b) Here, the hour hand moves from 2 to 8. It starts from 2 and covers digits 3, 4, 5, 6, 7 and 8. So, hour hand turned by two right angles, (c) Here, the hour hand moves from 5 to 11. It starts from 5 and covers digits 6, 7, 8, 9, 10 and 11. So, hour hand turned by two right angles. (d) Here, the hour hand moves from 10 to 1. It starts from 10 and covers digits 11, 12 and 1. So, hour hand turned by one right angle. (e) Here, the hour hand moves from 12 to 9. It starts from 12 and covers digits 1 to 9. So, hour hand turned by three right angles. (f) Here, the hour hand move from 12 to 6. It starts from 12 and covers digits 1, 2, 3, 4, 5 and 6. So, hour hand turned by two right angles.
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