Hence, option A 0.64 is the correct answer.
Further explanation:
Ounce is a larger unit than grams. When we have to go from a smaller unit to a larger unit we use division.
So,
Given
28.3 grams = 1 ounce
Then

Hence, option A 0.64 is the correct answer.
Keywords: Conversions, Units of measurement
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Answer:
1/1560
Step-by-step explanation:
The chance of you winning is 1/40, since there are 40 students and you are one of those students. Since, you cannot win again once you win once, you are eliminated. This leaves us with 39 people left. The chances of your friend being chosen out of the 39 people left is 1/39. Now you must multiply 1/40 and 1/39. After multiplying, you get 1/1560.
Number 2 is 20 number 3 is 11
The last one since it contains only fractions