Multiple Choice Question: What type of sequence is 12, 6, 4, 3, ...?

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Orphaned Multiple Choice Questions (MCQ) due to changes of exam system.

A time deposits of P110,000 for 31 days earns P890.39 on maturity date after deducting the 20% withholding tax on interest income. Find the rate of interest per annum.
A non-square rectangle is inscribed in a square so that each vertex of the rectangle is at the trisection point of the different sides of the square. Find the ratio of the area of the rectangle to the area of the square.
How is the dry density of a soil related to its density at full saturation? $\rho_w$ is the density of water, $n$ is the porosity and $e$ is the void ratio.
Find the area of the largest rectangle that can be inscribed in the ellipse x^2/25 + y^2/16 = 1.
A privateer discovers a merchantman 10 miles to leeward at 11:45 am and with a good breeze bears down upon her at 11 mph, while the merchant can only make 8 mph in her attempt to escape.
A wall 10 ft high along the property line is 8 ft from a house.
Find k so that x + 6 is a factor of x^4 + 4x^3 - 21x^2 + kx + 108.
lXCn0Dq-1 What is the bearing of side BC?
When an irregular shaped object is placed in a cylindrical vessel of water whose radius is 8 cm, the water rises 6 cm. What is the volume of the rock if it is completely submerged?
m7NbLvW-1 Find the mid-chord elevation.
A disease is known to affect 1 in 10,000 people. It can be fatal, but it is treatable if it is detected early. A screening test for the disease shows a positive result for 99% of people with the disease. The test shows positive for 2% of people who do
How many 3-digit numbers greater than 300 can be made out from digits 0, 1, 2, 3, 4, 5, and 6 if repetition of digit is not allowed?
According to Hooke’s law, the force F required to stretched a spring of x units is directly proportional to the length x.
A sum of money amounting to P5.15 consists of 10 cents and 25 cents. If there are 32 coins in all, how many 25 cents are there?
Solve for x if log_x (2x)^(3x) = 4x.