- A3
- B4
- C2
- D5
Step-by-Step Solution
Step I: 9 48 21 63 30; Step II: 9 21 48 63 30; Step III: 9 21 30 48 63 (now fully sorted). Three steps are needed.
Answer: A) 3
A number-arranging machine rearranges an input line of numbers using one rule at each step: the next-lowest number is moved into its final sorted position from the left, and the remaining numbers shift one place to the right keeping their order. Example — Input: 35 16 42 8 23 19; Step I: 8 35 16 42 23 19; Step II: 8 16 35 42 23 19; Step III: 8 16 19 35 42 23; Step IV: 8 16 19 23 35 42 (last step). For the Input: 48 21 9 63 30, how many steps are needed to reach the final arrangement?
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