Common Admission Test (CAT) Questions and Answers with Explanation

Q:

What is the next number of the following sequence ?

21, 77, 165, 285, ......

A) 404	B) 415
C) 426	D) 437

Answer & Explanation Answer: D) 437

Explanation:

The series follow the rule,

21 = $5^{2}-4$
77 = $9^{2} - 4$
165 = $13^{2} - 4$
285 = $17^{2} - 4$

5,9,13,17,21,(+4)...
In the same way next no. will be
$21^{2} - 4$ = 441 - 4 = 437

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50 139503

Q:

What will come in place of the question mark(?) in the following question ?

56% of 870 + 82% of 180 = 32% of 90 + ?

A) 777	B) 666
C) 606	D) 789

Answer & Explanation Answer: C) 606

Explanation:

56% of 870 = 56x870/100 = 487.20

82% of 180 = 82x180/100 = 147.60

32% of 90 = 32x90/100

487.20 + 147.6 - 28.8 = ?

? = 634.8 - 28.8

? = 606.

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9 139500

Q:

One word substitution:

Commencement of words with the same letter.

A) Alliteration	B) Oxymoron
C) Pun	D) Transferred epithet

Answer & Explanation Answer: A) Alliteration

Explanation:

Alliteration is the one-word substitute for Commencement of words with the same letter.

Alliteration is a figure of speech which is identified as the occurrence of the same letter or sound at the beginning of adjacent or closely connected words.

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34 139444

Q:

What letter will come in place of question mark ?

L J H

J P D

P ? E

A) K	B) L
C) P	D) I

Answer & Explanation Answer: D) I

Explanation:

Sum of place value in a row is 30.

So the letter which comes in place of '?' is 'I'.

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81 139354

Q:

How many squares do you see?

squares11523426304.jpg image

A) 44	B) 45
C) 46	D) 50

Answer & Explanation Answer: B) 45

Explanation:

Number of squares in the given figure is

16 + 9 + 19 + 1 = 45.

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766 138803

Q:

One Word substitute :

Extreme old age when a man behaves like a fool

A) Superannuation	B) Imbecility
C) Senility	D) Dotage

Answer & Explanation Answer: D) Dotage

Explanation:

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60 138224

Q:

What will come in place of question mark (?) in the following number series?

4, 3, 4, 7, 15, ?

A) 42	B) 44
C) 53	D) 56

Answer & Explanation Answer: B) 44

Explanation:

4 3 4 7 15 ?
×1-1 ×1+1 ×2-1 ×2+1 ×3-1

15x3 - 1 = 45 - 1 = 44

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8 136304

Q:

311, 230, 294, ?, 281, 256

What will come in place of the question mark (?) in the above number series?

A) 240	B) 245
C) 244	D) 246

Answer & Explanation Answer: B) 245

Explanation:

Given 311 230 294 ? 281 256

311 - (9x9) = 230

230 + (8x8) = 294

294 - (7x7) = 245

245 + (6x6) = 281

281 - (5x5) = 256

Hence, the missing number in the given series is 245.

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