A) 75000
B) 756000
C) 75600
D) None of these
Correct Answer: B
Solution :
Required number of words \[{{=}^{6}}{{C}_{4}}{{\times }^{5}}{{C}_{3}}\times 7\,!\ =756000\] {Selection can be made in \[^{6}{{C}_{4}}{{\times }^{5}}{{C}_{3}}\] while the 7 letters can be arranged in \[7\ !\]}.
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