

MCQOPTIONS
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1. |
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» C. ${3^{60}}$$ | |