gmatmix780

Yes, proof has been wrongly used. Prove should have been used.

Option A is correct. Less beautiful than usual.--> Less X than Y, where X and Y are grammatically parallel. In the b, "She is less beautiful today than she was yesterday" could be correct. You have to compare the similar things. So b is wrong.

In comparison, we need to use similar things to compare. Example: Karim is taller than Rahim is. ==> Karim is taller than Rahim. Part 1: Karim is part 2: Rahim is. X is more than Y, in this case X and Y must be grammatically and logically parallel. So, "X is heavier than it is taller" can be written as "X is heavier than (it is) taller.

Since + Time: When we use "Since+ Time", we need to use Present perfect tense. Search for the options that have used other than present perfect tense. We find C and E have not used present perfect tense. Eliminate C and E. We are left with A, B, and D. In the GMAT land, "there is/there have" type structures are most often avoided. [see the official guide example] Reference: OG11_SC#1: Explanation: “There is”- may frequently be omitted to create a more concise sentence. Eliminate the option D and E. We are left with the options A and B. In the option A: The option A changes the intended meaning of the sentence by saying that littering has occurred because of littering. We are left with B, the best answer.

Since + Time: When we use "Since+ Time", we need to use Present perfect tense. Search for the options that have used other than present perfect tense. We find C and E have not used present perfect tense. Eliminate C and E. We are left with A, B, and D. In the GMAT land, "there is/there have" type structures are most often avoided. [see the official guide example] Reference: OG11_SC#1: Explanation: “There is”- may frequently be omitted to create a more concise sentence. Eliminate the option D and E. We are left with the options A and B. In the option A: The option A changes the intended meaning of the sentence by saying that littering has occurred because of littering. We are left with B, the best answer.

Gerund: A gerund is a "VERB+ING" that works as a NOUN in a sentence. Example: Walking is good for health. I like his walking. Present participle: Present participle is also "VERB+ING", but it does not work as NOUN. It works as adjective and modifier. Example: Adjective: We may need walking stick at our old age. They are searching for swimming cloth. Modifier: Seeing the police, the thief ran away. I scored higher in math, leading my total score to 780. HTH.

Glad it helped.

Explanation.

The player's helmets need to be repainted so that they will be ready to be used at practice on Sunday. They clearly refers to helmets. Know the theory first. 1. Pronoun must refer to the NOUN that is parallel to the pronoun. If the Pronoun is in the subject position, the NOUN should also be in the subject position. 2. Possessive cannot refer to the subject pronoun.3. See the meaning of the sentence if the NOUN is replaced in the position where the pronoun has been used.4. Match the number of the NOUN and the pronoun. Now check: 1. Helmets is the subject of its clause, and they is the subject of its clause--they are parallel. 2. Player's is the possessive; therefore, it cannot refer to the subject pronoun, they. 3. If we use "player", we get two problems: 3.1. Player will be ready to be used---meaning they player will be used. Nope. 3.2. They is plural, but player is singular. They don't agree in number. Conclusion: The sentence is correct as it is. Just know the skeleton of the sentence, and you should always try to find out the intended meaning of the sentence. HTH. Mix.

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If (x-1)!/(X-3)!*2 =72, what is the value of x? what is the easiest way to solve this?

Subject verb inverse: Here the case is the subject verb inverse. Only C maintains all things correctly. Thanks.

The list of animals that exhibit Here, that refers to animals for the following reasons: 1. It is animals that can exhibit. 2. List cannot exhibit. So, the verb after that should be plural. Eliminate A and B. Either X or Y: X and Y MUST be grammatically parallel. In C and E "either using or the left" does not maintain parallelism. Eliminate them. The remaining option, D, is the best answer. Thanks.

Background: 1." As fast as + Clause" should be the correct answer because "as" is used to compare clauses. --> Eliminate A, B, and C. 2. Rate cannot be fast. -> Eliminate A and B. 3. cutting should be parallel with raising.--> Eliminate E. Answer is D.

This is a very interesting concept. See TestMagic Explanation on Absolute Phrases. The only option E maintains this rule.