GRE Questions and Answers with Explanation

Q:

If $x = 2 + 2^{\frac{2}{3}} + 2^{\frac{1}{3}}$ then find the value of $x^{3} - 6 x^{2} + 6 x$ ?

A) 1	B) 2
C) 3	D) 4

Answer & Explanation Answer: B) 2

Explanation:

Given that $x = 2 + 2^{\frac{2}{3}} + 2^{\frac{1}{3}}$

So x - 2 = $2^{\frac{2}{3}} + 2^{\frac{1}{3}}$

Now cubing on both sides, we get

=> $x^{3} - 8 - 6 x^{2} + 12 x = 4 + 2 + 6 (x - 2)$

Therefore, $x^{3} - 6 x^{2} + 6 x = - 6 + 8 = 2$

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Filed Under: Square Roots and Cube Roots
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11 3601

Q:

Which term is a type of detail?

A) chronology	B) prose
C) style	D) statistic

Answer & Explanation Answer: A) chronology

Explanation:

In chronology, the sequence of events from the latest to the oldest events or vice versa is laid. In this case, the details of how a particular event or place or thought developed through time is detailed in a chronology.

Hence, the term chronology is a type of detail.

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4 3597

Q:

The largest word class in English?

A) Nouns	B) Verbs
C) Prepositions	D) Adjectives

Answer & Explanation Answer: A) Nouns

Explanation:

Nouns form the largest word class, and verbs the second-largest in English.

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Filed Under: English
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1 3595

Q:

Which sentence is written correctly?

A) Ms. Praveena showed us a documentary in class today because the film, "focuses on a similar subject" to a book we are going to read.	B) Ms. Praveena showed us a documentary in class today because the film "focuses on a similar subject" to a book we are going to read.
C) Ms. Praveena showed us a documentary in class today because the film, "Focuses on a similar subject" to a book we are going to read.	D) Ms. Praveena showed us a documentary in class today because the film "Focuses on a similar subject" to a book we are going to read.

Answer & Explanation Answer: A) Ms. Praveena showed us a documentary in class today because the film, "focuses on a similar subject" to a book we are going to read.

Explanation:

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8 3594

Q:

The act of formally approving something is known as Arbitration.

A) TRUE

B) FALSE

Answer & Explanation Answer: B) FALSE

Explanation:

The act of formally approving something is known as Ratification.

Workspace

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Subject: General Awareness
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2 3593

Q:

Read the following information carefully and answer the question below. Seven Students – A, B, C, D, E, F and G like different Pens viz, Reynolds, Cello, Parker, Rotomac, Flair, Linc and Eilcos but not necessarily in the same order. They also study in three different standards viz. 9th, 10th and 12th. Not more than three and not less than two students study in the same class. A do not likes cello pen. Persons who like cello and Flair pens, study in the same class. G studies in 10th standard but he does not likes flair pen. B studies with only one student, who likes linc pens. B does not studies with G. E likes Rotomac but he do not study in class 9. D studies in class 9 but he does not like line pen. A does not study in class 12. F does not like linc pen. The one likes Parker pen, studies in class 10. The one, who likes Reynolds pen, studies in same class with one who likes Flair pen. D likes neither Flair pen nor cello pen.

1. Who likes Parker Pen ?

(1) F (2) G (3) H (4) None

2. Three of the following four are similar in a certain way. Find the odd one ?

(1) BE (2) AD (3) EG (4) DF

3. Which three student study in the same class ?

(1) ADE (2) DFG (3) ADF (4) AEG

4. C likes which pen ?

(1) Reynolds (2) Flair (3) Cello (4) Linc

Answer

download21486193578.png image

1. Answer (2) G

2. Answer (1) BE All other pairs are in same class.

3. Answer (3) ADF in class 9.

4. Answer (4) Linc pen.

Workspace

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6 3592

Q:

Which one of the following launched world's longest scheduled flight ?

A) Qatar Airways	B) British Airways
C) Jet Blue	D) Air India

Answer & Explanation Answer: A) Qatar Airways

Explanation:

The Qatar Airways has launched the World’s longest scheduled commercial service to ply between Doha to Auckland. The inaugural service of Flight QR920 took off on February 5, 2017 from Doha and will take 16 hours and 20 minutes to travel 14,535 kilometers to reach Auckland in New Zealand.
This makes Qatar Airways to launch the World’s fastest and longest passenger service in terms of flying time. Prior to this, emirates launched the world’s longest non-stop scheduled commercial flight with a service from Dubai to Auckland, spanning 14,200 kilometres.

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5 3565

Q:

That which cannot be corrected

A) Incorrigible	B) Illegible
C) Illegal	D) Indelible

Answer & Explanation Answer: A) Incorrigible

Explanation:

The One-word substitute for That which cannot be corrected is Incorrigible.

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4 3562

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