just took the OAR portion of the test, and although it is obvious that not one test is alike, here is my feedback
-there is no set number of questions for each section...for the math, it cut off around maybe 15 or 20 questions, i had at least 20 mins left on time, but both the reading and mechanical, i had only a minute or so to go...time is 40 (math), 30 (reading), and 15 (mechanical)
-for both the math and mechanical, it is primarily intuitive...i spent a lot of time memorizing formulas or ways to solve certain arithmetic/word problems, and i literally did not come across one...the few arithmetic/word problems i did get both in math and mechanical i had not seen before...do not let this scare you though, just be prepared to figure out a new set of data
-the math had at least 4 questions on probability, such as, if you roll a pair of dice 2 times, what are your chances of..
-the ENTIRE reading section has this type of format:
"A storm must pass through different stages before becoming a hurricane. The onset of this process occurs when low pressure air spins inward cyclonically to form the eye of the building storm. During the intermediate stages of development, the storm is first referred to as a tropical depression, later as a tropical storm before increasing in intensity to become a hurricane.
(A) During the tropical depression stage of hurricane development, the eye is formed by winds moving in a clockwise direction.
(B) A hurricane is the most violent of all natural phenomena because the eye of the storm is composed of cyclonic air movement.
(C) Tropical storms do not contain eyes because they develop from high pressure air systems.
(D) Cyclonic air movement plays a central role in the creation of hurricane force winds."
...there are no synonyms, parts that ask you what the title would be, what does this explain, what word is wrong, none of that, all of it is a multiple choice of phrases that are from the passage, often they try to trick you with changing a word or two