1, 2, 6, 7, 9: A 3-digit integer is to be formed from the digits listed above. If the first digit must be odd, either the second or the third digit must be 2, and no digit may be repeated, how many such integers are possible?
A. 6
B. 9
C. 18
D. 2
সঠিক উত্তরঃ
C.
18
Explanation:
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