The average (arithmetic mean) of 330, 360 and 390 is :
A. $${3^{27}} + {3^{57}} + {3^{87}}$$
B. $${3^{29}} + {3^{59}} + {3^{89}}$$
C. $${3^{60}}$$
D. $${3^{177}}$$
Answer: Option B
Solution (By Examveda Team)
According to the question,$$\eqalign{ & \Rightarrow \frac{{{3^{30}} + {3^{60}} + {3^{90}}}}{3} \cr & \Rightarrow {3^{29}} + {3^{59}} + {3^{89}} \cr} $$
This Question Belongs to Arithmetic Ability >> Average
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