Permutations And Combinations Question 167
Question: Total number less than 3 x $ 10^{8} $ and can be formed using the digits 1,2,3 is equal to
Options:
A) $ \frac{1}{2}(3^{9}+4\times 3^{8}) $
B) $ \frac{1}{2}(3^{9}-3) $
C) $ \frac{1}{2}(7\times 3^{8}-3) $
D) $ \frac{1}{2}(3^{9}-3+3^{8}) $
Correct Answer: C
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Answer:
Solution:
BETA
