By proportion:-
4 / 30 = x / 75 where x is number needed for the '75' country
30x = 300
x = 10
They need 10 drivers.
10C6 = 10!/(6!*(10-6)!) = 10*9*8*7/(4*3*2*1) = 210
There are 210 ways to choose 6 from a group of 10.
4 is your answer have a great day
Answer:

Step-by-step explanation:
1221 x 1221 = 1490841
square root of 1490841 is 1221
Essentially look at your formula sheets, Take notes on your assessment questions and you should be fine.