Statistics and Average
- ক. 72
- খ. 90
- গ. 93
- ঘ. 98
উত্তরঃ 93
53. If 3a +5b = 10 and 5a + 3b = 30, what is the average (arithmetic mean) of a and b?
- ক. 4
- খ. 2.5
- গ. 3.5
- ঘ. 4.5
উত্তরঃ 2.5
- ক. 30
- খ. 40
- গ. 70
- ঘ. 90
উত্তরঃ 40
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উত্তরঃ 93
53. If 3a +5b = 10 and 5a + 3b = 30, what is the average (arithmetic mean) of a and b?
উত্তরঃ 2.5
উত্তরঃ 40