Write as a decimal: 203% 0.203 2.03 20.3 203

1 answer:

3 0

The correct answer is: [B]: " 2.03 " .
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Note: "203 % = 203/100 = 203 ÷ 100 = ?

203. ÷ 100 = ?

Move the decimal point (in "203." ) two (2) spaces back, since we are DIVIDING by "100"; which has TWO (2) zeros;

to get: " 2.03" ; which is: Answer choice: [B].
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There are two methods to find this answer.

Method 1) We have 6 girls and 8+6 = 14 students. The probability of picking a girl is 6/14 = 3/7. After the first girl is chosen, we have 5 girls left out of 14-1 = 13 students overall. The probability of picking another girl (assuming the first selection was a girl) is 5/13. Multiply these probabilities: (3/7)*(5/13) = (3*5)/(7*13) = 15/91

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Method 2) We can use the nCr combination formula. Order does not matter.

We have nCr = 6 C 2 = 15 ways to pick 2 girls. See the attached image below for the steps (figure 1)

Out of nCr = 14 C 2 = 91 ways to pick 2 students. See the attached image below for the steps (figure 2)

So that's another way to get the answer 15/91.