(6) (c) 5040 118. Af (d) None of th...
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(6) (c) 5040 118. Af (d) None of these. arre 110 In how many different ways 3 rings of a lock can not combine when each ring has digits 0,1,2 ...9 leading to unsuccessful events? wa (a) (b - of 4 5 (a) 999 (b) 103 (C) 10! 119. (d) 997 numbers greater than 300 that

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Total events ( =10^{star} 10^{star} 10=1000 ) Out of it one is successful. So the number of unsuccessful events is ( 1000-1=999 )
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