A) 18
B) 21
C) 24
D) 27
Correct Answer: C
Solution :
:78, 75,.., 12, 9, 6 From the bottom, 1st number \[=2\times 3=\text{ }6\] 2nd number \[=3\times 3=\text{ }9\] \[\therefore \]7th number \[=\text{ }8\times 3=24.\]You need to login to perform this action.
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