1. In the Operating System zoo describe the 4 different types of Operating Systems and describe them.

2. Describe what happens when booting a computer ?

3. What are System calls. Provide 6 file and directory system calls

A coin has a probability of 1/4 for head, and is repeatedly tossed until
we throw head. The successive results of the toss are independent of each other.
What is the probability that the first time we throw head after an odd number of toss?
Hint: Use the law of total probability and consider the event that the
first toss is head is, and her complement, as conditioning events.

Correct answer: 3/7

Edwards Company contracted on 4/1/17 to construct a building for $4,800,000. The project was completed in 2019. Additional data follow: 2017 2018 2019 Costs incurred to date $1,120,000 $2,700,000 $3,800,000 Estimated cost to complete 2,080,000 900,000 — Billings to date 1,000,000 3,800,000 4,800,000 Collections to date 800,000 2,600,000 4,400,000 Instructions (a) Calculate the income recognized by Edwards under the percentage-of-completion method of accounting in each of the years 2017, 2018, and 2019. (b) Prepare all necessary entries for the year 2018. (c) Present the balance sheet disclosures at December 31, 2018. Proper headings or subheadings must be indicated.

Question 1 of 4

A family plans to have 3 children. For each birth, assume that the probability of a boy is the same as the probability of a girl.

What is the probability that they will have three children of the same gender?

A- 0.5

B- 0.25

C- 0.375

D-0.125

E-none of these

Question 2 of 4

A person in a casino decides to play blackjack until he loses a game, but he will not play more than 3 games. Let L denote a loss and W denote a win.

What is the sample space for this random experiment?

A- S = {LLL, LLW, LWL, LWW, WLL, WLW, WWL, WWW}

B- S = {L, LW, LLW, LLL}

C- S = {L, LL, LLL}

D- S = {L, WL, WWL, WWW}

F- S = {L, WL, WWL}

Question 3 of 4

A person in a casino decides to play 3 games of blackjack. Let L denote a loss and W denote a win. Define the event A as "the person loses at least one game of blackjack."

What are the possible outcomes for this event?

A- {LLL, LLW, LWL, LWW, WLL, WLW, WWL}

B- {LLL, LLW, LWL, LWW, WLL, WLW, WWL, WWW}

C-{LWW, WLW, WWL}

D- {L, WL, WWL}

E-{L, LL, LLL}

Question 4 of 4

Four students attempt to register online at the same time for an Introductory Statistics class that is full. Two are on the football team and two are on the basketball team. They are put on a wait list. Prior to the start of the semester, two enrolled students drop the course, so the professor randomly selects two of the four wait list students and gives them seats in the class.

What is the probability that both students selected play the same sport?

A, 1/12

B, 1/6

C, 1/3

C, 1/2

D, It is impossible to tell because the outcomes are not equally likely.

Use mathematical induction to prove that for each integer n ≥ 4, 5ⁿ ≥ 2²ⁿ⁺¹ + 100.

1. List the 4 phases of the business cycle.

Which phase are we in right now?

What evidence do you have to support your theory?

Describe who is in the labor force.

Who is not included in the labor force. In the past 20 years or so, the baby boom generation has been retiring. It is estimated that 10,000 turn 65 years old every day in the US. In addition, record numbers of workers gave up looking for jobs in the 2008-09 recession. How do these demographic and cultural changes affect the unemployment rate?

The Product Life Cycle:

The 1st Assignment: Select 4 products in the market today, (1 that fits into each of the 4 product life cycle stages) Introduction, Growth, Maturity and Decline and do the following:

• 1st.Describe the product you selected.
• 2nd Describe why they fit into the stage you placed them.

The 2nd Assignment: Look at the Diffusion of Innovation and for either, yourself or a member of your family or both pick a product that you or they purchased that places you or them into each of the 5 categories.

Problem 4.Step 1: Generate a random integer between 3 and 6. Set A to be the value of the generated number.Step 2: Generate a random integer between 3 and 6. Set B to bethe value of the generated number.You are running a camp of 30 students, including John and Jane.3a.) What is the total possible ways you can arrange 2 focus groupsof students one group being size A(from step 1), and the other sizeB.3b.) What is the probability that John and Jane are not in the samegroup ( so either not chosen or are chosen but not in the same group).

Question 3

Part a JKL Ltd bought an item of equipment at $4 million on 1 January 2017, it had estimated life of 8 years and residual value at $800,000. The equipment was depreciated on straight line basis. However, the Inland Revenue Department does not allow depreciation as deductible expenses. Instead, tax expenses of this type of asset can be claimed against income tax in the year of purchase and 20% per annum (on reducing balance basis) of tax base thereafter. The rate of income tax was taken as 25 %.

Required In respect of above items of equipment, calculate the deferred tax charge (i.e. tax expenses) or tax credit (i.e. tax benefit) in JKL Ltd’s books for the year ended 31 December 2019 through the journal entry. Note: Extract of income statement is not required

Question 3
Part a
JKL Ltd bought an item of equipment at $4 million on 1 January 2017, it had estimated life of 8 years and residual value at $800,000. The equipment was depreciated on straight line basis. However, the Inland Revenue Department does not allow depreciation as deductible expenses. Instead, tax expenses of this type of asset can be claimed against income tax in the year of purchase and 20% per annum (on reducing balance basis) of tax base thereafter. The rate of income tax was taken as 25 %.

Required
In respect of above items of equipment, calculate the deferred tax charge (i.e. tax expenses) or tax credit (i.e. tax benefit) in JKL Ltd’s books for the year ended 31 December 2019 through the journal entry.
Note: Extract of income statement is not required

Part b
Why did companies provide for deferred tax items in its financial statement? (Total 15 marks)