Q.
The number of integers greater than 6,000 that can be formed, using the digits 3,5,6,7 and 8, without repetition, is:
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a
72
b
216
c
192
d
120
answer is C.
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Detailed Solution
All five digited numbers are 5!=120 in number All Four digited numbers starting with either 6, 7 or 8 are 3×24=72 in numberThe Required number of number is 120 + 72 = 192
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