A drawer holds 4 red hats and 4 blue hats. What is the probability of getting exactly three red hats or exactly three blue hats when taking out 4 hats randomly out of the drawer and immediately returning every hat to the drawer before taking out the next?
Answer(s): C
Getting three red out of 4 that are taken out has 4 options (4! / (3!*1!)) each option has a probability of (1/2)4 since drawing a red or blue has a 50% chance. 4*1/16= 1/4 to get three red hats. The same goes for three blue hats so 1/4+1/4 =1/2. The correct answer is C.
If 4XZ + YW = 3 and XW + YZ = 6, what is the value of the expression (2X + Y)(2Z + W)?
(2X + Y) (2Z + W) = 4XZ + 2XW + 2ZY + WY.Now, plug in this data to get: 3 + 2 x 6 = 15. The correct answer is C.
X is an even number and Y is a positive odd number. Which of the following expressions cannot be even?
Answer(s): E
The fastest way to solve this problem is by plugging in some numbers. Let’s say: X = 2, Y = 1.According to answer e: 1 x 1 = 1 and that must be an odd number. The correct answer is E.
How much interest will $2,400 earn at an annual rate of 8% in one year if the interest is compounded every 4 months?
Here, it is enough to calculate the simple interest of 8% per year.$2,400 x 8/100 x 1 = $192. Since we are calculating as a compounded rate, the interest should be a bit higher or C as the correct answer.
X is a prime number bigger than 10. Also, Y = X+X3+X5+X7. What is definitely true about Y?
Because X is a prime number bigger than 10, it must be odd. Ignoring the powers of X in the expression of Y, you’ll see that Y is a sum of 4 odd numbers therefore it must be even. The correct answer is C.
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Thank you for providing these questions. It helped me a lot with passing my exam.
my first attempt
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i think answer of q 462 is variance analysis
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a company runs its workloads on premises. the company wants to forecast the cost of running a large application on aws. which aws service or tool can the company use to obtain this information? pricing calculator ... the aws pricing calculator is primarily used for estimating future costs
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q 14 should be dmz sever1 and notepad.exe why does note pad have a 443 connection
question # 108, correct answers are business growth and risk reduction.
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question: 162 should be dlp (b)
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question 46, the answer should be data "virtualization" (not visualization).
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question 134s answer shoule be "dlp"
in 72 the answer must be [sys_user_has_role] table.