Answer:
90
Step-by-step explanation:
A group of 10 people is choose a chairperson and vice-chairperson. They put all 10 peoples names into a bar. The first name drawn becomes chair. The second name drawn becomes vice-chair. How many possible combinations of chair and Vice-chair are there ?
This is calculated using the Permutation formula
nPr = n!/(n - r)!
Where:
n = 10 people
r = 2 = 2 positions to be filled , Chairman and Vice chairman
Hence:
10P2 = 10!/(10 - 2)!
= 90 ways
<span><span>2.5−<span>4<span>(<span>1.5−10</span>)</span></span></span>+3</span><span>=39.5</span>
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Answer:
12
Step-by-step explanation:
You move the term calculate on both sides and you got -1
Answer:
2 + 5.8 cannot be 6 because 2 + 5.8 is 7.8.
Six is a correct sum to the expression 0.2 + 5.8, not 2 + 5.8.
