GMAT Exam Prep(2022) with complete solutions.

GMAT Exam Prep(2022) with complete solutionsSections 1. Analytical writing (analysis of an argument)- 30 min. Type essay on keyboard. Scored on a scare of 0-6. 2. Integrated reasoning (multi-source reasoning, table analysis, graphics interpretation, two-part analysis)- 30 min. Get computer calculator. Multiple choice. 12 questions. Take break after. 3. Quantitative (problem solving and data sufficiency)- 75 min. No calculator. Multiple choice. Scored on a scale of 0-60. 37 questions. Take break after. 4. Verbal (reading comprehension, critical reasoning, sentence correction) - 75 min. Multiple choice. Scored on a scale of 0-60. 41 questions. No notes/scratch paper allowed, but they give a dry erase board and marker. Total GMAT score is between 200 and 800, based on verbal and quantitative sections. Determined by # questions answered, # answered correctly/incorrectly, and the level of difficulty and other characteristics of the questions. If you answer easy questions correctly, get a chance to answer harder ones, making a higher score possible. AWA and Integrated reasoning scores reported separately from the rest of the test and have no effect on verbal, quantitative, or total score. General Test-taking tips 1. Use time wisely- 1 3/4 min per verbal Q, 2 min per quantitative Q. 2 1/2 min per IR Q. Onscreen clock shows the amount of time left during the test. It will auto alert when there are only 5 min left in the section. 2. Answer practice Qs ahead of time- familiarize self with all question types then do practice Qs, preferably timed. 3. Read directions carefully- if forget them, click on the help icon. Try not to do this bc that time still counts. Just try to remember at the beginning. 4. Read each question carefully/thoroughly. 5. Don't spend too much time on any one question- more worthwhile to move on. 6. Confirm answers only when ready to move on- can't go back and change once it is confirmed. Can't skip questions. For the IR section there could be multiple questions based on one prompt. When this happens, if they show on one screen, you can change your response to any of the questions on the screen before going to the next screen. However, you can't go back to that screen again once you've moved on. 7. Plan your essay answer before you begin writing. Even though the first 10 questions help the algorithm to determine your ability for the following questions, focus on them all equally, as the score is computed based on your answers to all of them, and it is more important to complete the test than to respond correctly to every question. 00:00 01:22 Basic Grammar Rules for Sentence Correction Portion 1. Agreement: -non-verb agreement: singular subjects w singular verbs, plural w plural. I walk to the store not I walks to the store. -pronoun agreement: pronoun must agree w/ noun/pronoun it refers to in person, number, and gender. When you dream, you are usually asleep, not when one dreams, you are usually asleep. 2. Diction: -among vs between: among refers to relationships involving 2 objects. Between is for relationships with only 2 objects. -as vs like: As can be a preposition meaning "in capacity of" or can be a conjunction of manner followed by a verb. Like is used as a preposition, and should be followed by a noun, object pronoun, or verb ending in -ing. -mass and count words: mass words are nouns quantified by an amount rather than a number. Count words are nouns quantified by a number. -pronouns: myself shouldn't substitute I or me. 3. Grammatical Construction: -fragments: parts of a sentence disconnected from the main clause. -run-on sentences: two independent clauses that run together without proper punctuation. -constructions: wordy and redundant. 4. Idiom: Nonstandard expressions should be avoided, although English idioms don't always follow conventional grammatical rules. Be sure to use the correct idiom when using the constructions and parts of speech. -Prepositions: specific prepositions have specific purposes jog in the morning vs jog on the morning. -Correlatives: word combos such as "not only... but also" should be followed by an element of the same grammatical type. -Forms of comparison: fewer refers to a specific number, whereas less than refers to a continuous quantity. Between... and is the correct for to designate a choice. Farther is for distance, further refers to degree. 5. Logical Predication: phrases detracting from the logical argument. -modification problems: modifiers should be positioned so it is clear what word(s) they are modifying. I put the cake that I baked by the door not I put the ake by the door that I baked. 6. Parallelism: making sure different elements in a sentence balance one another. The only way to know is to take the plunge, not the only way to know is taking the plunge. 7. Rhetorical construction: Awkward, wordy, redundant, imprecise, or unclear constructions should be avoided even when they are free of grammatical errors. 8. Verb Form: correct tenses. -present perfect: has/have + verb. -past perfect: had + verb. -future perfect: will have. -present progressive: ongoing action that is happening now, used with am, is, or are + verb-ing. -past progressive: was or were + verb-ing. -future progressive: will be or shall be + verb-ing. -present perfect progressive: have been or has been + verb-ing. -past perfect progressive: had been + verb-ing. -future perfect progressive: will have been + verb-ing. Properties of Integers An integer is any number in a set {-1, 0, 1}. If x and y are integers and x 0, x is a factor of y as long as y=xn for some integer n. In other words, y would be divisible by/a multiple of x. A quotient is the number that can be evenly divided into another, the remainder is what is left over if it is not even. y is divisible by x only if the remainder is 0. When a small integer is divided by a large integer, the quotient is 0 and the remainder is the small integer. (5/7= 7(0) + 5). Integers divisible by two are called even. Those not divisible by two are called odd. If at least one factor in a product of integers is even, the product itself is even. Otherwise, it is odd. If two numbers are both even or odd, their sum and difference will be even. Otherwise, it is odd. A prime number is a positive integer with only two different positive divisors, 1 and itself. 2, 3, 5, 7, 11. 1 is not a prime number because it only has 1 divisor. Every number 1 is either prime or a can be shown as a product of prime numbers. Consecutive integers are all in a row. n, n+1, n+2, etc. Consecutive even integers= 2, 4, 6, 8. 2n, 2n+2, 2n+4, etc. Consecutive odd integers= 1, 3, 5, 7. 2n+1, 2n+3, etc. If n is any number then 1 x n = n. If n is not 0 then n x 1/n=1. 0 is neither positive nor negative. Cant divide by 0. Fractions Denominator can never be 0. Two fractions are equivalent if they represent the same number. Fractions can be reduced to their lowest terms by dividing the num and denom by their greatest common divisor. Adding/subtracting fractions: Fractions with the same denom can be added or subtracted through the numerators, leaving the denom the same. If the denom isn't the same, make it the same by expressing them as equivalent fractions w the same denom. Multiply by the least common multiple to do this. Multiplying/dividing fractions: For multiplying, multiply the numerators and the denominators. Done. To divide, invert the divisor (do the reciprocal, 4= 1/4), and multiply as normal. Mixed numbers: A whole number and a fraction. 7 and 2/3 is an example. To change this into a fraction, multiply the whole number by the denom of the fraction and add this number into the num of the fraction. 7 and 2/3 = [7(3) + 2]/3 = 23/3. Decimals Scientific notation= 2.31 x 10^2 is 231 or 2.31 x 10^-2 is .0231. Adding/subtracting decimals: line up the decimal points of both numbers (add 0s at the end if one has fewer digits to the right of the decimal point). Multiplying decimals: multiply them as though they were whole numbers and then add the decimal point in so that the number of digits to the right of it is the sum of the numbers of digits to the right of the decimal points being multiplied. 2.09 x 1.3 = 2.717. Dividing decimals: to divide a number by a decimal, move the decimal point of the divisor to the right until the divisor is a whole number, then move the decimal point of the dividend (num) the same number of places to the right, and divide as you would by a whole number. The decimal point in the quotient will be directly above where it is in the new dividend. Real Numbers Real numbers all correspond to points on the number line, and all points on the number line correspond to real numbers. The distance between a number and 0 on the number line is called the absolute value of the number. 3 and -3 have the same absolute value |3|. Absolute values are always positive in any nonzero number. xy + xz is the same as x(y+z). |x=y| is or = |x| +|y|. Ratios and Proportions The ratio of a to b where b is not 0 = a/b. Can be written several ways, a/b, a to b, a:b. A proportion is a statement that two ratios are equal. 2/3=8/12. A proportion involving an unknown can be solved by cross multiplying and solving for x. Percents 37% = 37/100 = 0.37. Percent change: if a problem asks for a % incr or decr from one quantity to another, divide the amount of the incr/decr by the original amount, and express this quotient as a %. Powers and Roots of Numbers k^n is the nth power of k. 2^2= 2 x 2=4. Raising a number 1 to a higher power creates a larger number. Raising a number between 0 and 1 to a higher power results in a smaller number. The square root of a number equals the number when squared. The square root of a negative is not a real number. Every positive number has a positive and a negative square root. The two square roots of 9 are 3 and -3. Cube roots are like square roots, but the cube root of a number equals the number when cubed. Can have negative cube roots on the inside. Descriptive Statistics Mean= sum of n numbers/n. Median= order numbers from least to greatest and pick the middle one. If there are two, the median is the average of them. It is not always the case that half of the data is less than and half is greater than the median. Mode= the number that occurs most frequently. There can be more than one. Range= difference between largest and smallest numbers. Standard deviation= find the mean, find the differences between the mean and each of the numbers in the data set, square all of the diffs, find the average of the squared diffs, take the square root of this. Smaller standard deviation= numbers being closer to the mean. Frequency distribution= lists each value and the frequency with which it occurs. Sets A set is a collection of numbers or objects. The objects are called elements. The number of elements in set S is denoted |S|. The order of the elements in the set doesn't matter. If all of the elements of set S are also elements of set T, then S is a subset of T. The union of sets A and B is the set of all elements that are in A or B or both (denoted by U). The intersection is the set of all elements that are in both A and B (denoted by upside down U). Two sets with nothing in common are disjoint/mutually exclusive. The number of elements in the union equals the sum of the number of elements in both sets minus the number of elements in the intersection. If they are mutually exclusive then it's just the sum of the number of elements in both sets..