Study the following arrangement carefully and answer the questions given below :
1 5 8 4 2 1 5 2 3 4 5 6 7 8 9 5 1 4 1 5 6 8 7 4
Which of the following is ninth to the left of twenty first from the left end of the above arrangement ?
Arrangement : 1 5 8 4 2 1 5 2 3 4 5 6 7 8 9 5 1 4 1 5 6 8 7 4
21st from left end = 6
9th to the left of 6 = 6
=> Ans - (C)
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