Which of the following is equal to 1/p percent of 50, for p>0

1)
a
50% of 1/p means 1/(2p)

2)
D

400 numbers
from 100 to 499

3)
a
k = 2m

the median of the doubled numbers is the double of the median of the numbers before doubling
3)
c.
there are
10 lefthanded (of whom 8 are women)
2 righthanded women
7 righthanded men

total 21

1.) (1/p)(1/100)(50) = 1/(2p)

Choose A.

2.) Note that only integers 100 - 499 inclusive lead to 3 digit integers when doubled.

# of integers = 499 - 100 + 1 = 400

Choose D.

3.) k must equal 2m.

Choose A.

4.) If 8 are lefthanded women, then there are 12 - 8 = 4 lefthanded men.

Total men = 4 + 7 = 11

Total women = 10

So there are a total of 21 people.