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Tom asked his grandmother how old she was. She replied with the following: I have 6 children, and there are 4 years between each one and the next. I had my first child when I was 19, now my youngest child is 19 herself.

How old is Tom's grandma?

Calculate the correlation coefficient for the following data

A correlation coefficient and its confidence interval are shown in this figure:

A man is asked what his daughters look like. He answers, "They are all blondes, but two, all brunettes, but two, and all redheads, but two." How many daughters did he have?

If a periodic pulse waveform has a pulse width and the time between pulses each equal to or greater than five time constants, the capacitor will:

In an RC differentiator, responding to repetitive pulses, what is the average value of the output?

Three days ago, yesterday was the day before Sunday. What day will it be tomorrow?

Which is a tool for identifying ways to create more customer value because every firm is a synthesis of Primary & Support activities performed to design, produce, market, deliver and support its products?

Those cost items which attach or cling to units of finished goods are called ________.

Barry is 67 years old. His daughter is 43. When was she 1/3 as old as him?

11001010(2) - 10011010(2)

What is the output of the following program?

In the middle of a round pool lies a water lily. The water lily doubles in size every day. After exactly 20 days, the lily will cover the complete pool. After how many days will the lily cover half the pool?

An urn contains 10 balls: 4 red and 6 blue. A second urn contains 16 red balls and an unknown number of blue balls. A single ball is drawn from each urn. The probability that both balls are the same colour is 0.44.

Calculate the number of blue balls in the second urn.

A survey of a group's viewing habits over the last year revealed the following information:

Calculate the percentage of the group that watched none of the three sports during the last year.

Which of the above statements is true?

Based on the information provided below, which of the following projects would you recommend pursuing?

Project I, with BCR (Benefit Cost ratio) of 1:1.6;
Project II, with NPV of R500,000;
Project III, with IRR (Internal rate of return) of 15%
Project IV, with opportunity cost of US R500,000.

Once the project scope has been firmly established, every detail of the project is defined through the ________.

Cathy has twelve black socks and twelve white socks in her drawer.

In complete darkness, and without looking, how many socks must she take from the drawer in order to be sure to get a pair that match?

Which of the following is not a strategic activity involved in Human Resources Management?

What word defines the development of hybrid value systems?

Which of the following countries has become the newest member of the Missile Technology Control Regime (MTCR)?

Name the country that on 23 June 2016 signed a ceasefire deal with rebels ending five-decade conflict.

What is South Africa's biggest export?

Which number completes the puzzle?

What is the recommended best practice for managing big data analytics programs?

What is the name of the programming framework originally developed by Google that supports the development of applications for processing large data sets in a distributed computing environment?