Number Series Practice Question LR Notes | EduRev

LR : Number Series Practice Question LR Notes | EduRev

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Easy

These questions are targeted to improve your knowledge on basic concepts, though easy questions are rare in CAT these are extremely important for conceptual understanding at foundation level

Try yourself:Find out the missing term: 

256, 64, 16, 4, ?

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Example 1: Find out the missing term:
0, 3, 8, 15, 24, 35, 48?

(a) 53
(b) 63
(c) 80
(d) None of these
Ans. (b) 
Solution: The series is following the pattern +3, +5, +7, +9, +11, +13 and hence the next term should be 48 + 15 = 63. Answer is option (b).


Example 2: Find out the missing term:
Obtain the missing term B, G, K, ?
(a) N
(b) P
(c) M
(d) L

Ans. (a)
Solution: The series is defined by the 2nd , 7th , 11th term of the alphabet. Hence, the next term would be the 14th term i.e., N. Option (a) is the correct answer 


Example 3: Find out the missing term:
?, 425, 600, 825, 1100, 1425
(a) 225
(b) 300
(c) 250
(d) None of these

Ans. (b)
Solution: The series follows a pattern of +175, +225, +275, +325. Hence, the first term should be 300, so the answer is option (b).

Try yourself:Find out the missing term: 

7,15, 27, ?, 63

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Try yourself:Find out the missing term:

1, 121, 12321, 1234321, ___?

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Try yourself:Find out the missing term:
0.005, 0.05, ?, 5
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Try yourself:Find out the missing term:

31, 32, 36, 45, ?

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Try yourself:Find out the missing term:

1, 5, 2, 25, 3, 125, 4, ?

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Try yourself:Find out the missing term:83, 82, 80, 77, ?
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Medium

Almost 70% of questions in CAT are of Medium based questions. Though the conceptually they seem easier, trick is to solve the calculations faster & we curated problems for you to help you do problems easier.


Example 1: Find out the missing term:
7: 45, 40, 35, _____ which term will be the first negative term of the series?
(a) 10th term
(b) 11th term
(c) 12th term
(d) 13th term
Ans. (b)
Solution: The first negative term will be –5 (11th term). Hence, option (b) is the answer.


Example 2: Find out the missing term:
1, 3, 2, 5, 3, 7, 4, 9, 5, 11, 6, ?
(a) 10
(b) 11
(c) 13
(d) 9
Ans.
(c)
Solution: Two series are intermixed. 1, 2, 3, 4, 5, 6 and 3, 5, 7, 9, 11. Hence, the next term should be 13. So option (c) is the answer.


Example 3: What is the next term in the following series?
ABE, BCF, CDG, DEH, EFI, ______
(a) FGK
(b) FGJ
(c) FGL
(d) None of these

Ans. (b)
Solution: The next term in the series would be FGJ. Hence, option (b) is the answer.

Try yourself:Find out the missing term:

1/1, 4/8, 9/27, 16/64, 25/125, ?

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Try yourself:Find out the missing term:

1, 4, 27, ?

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Try yourself:What is the next term in the following series?

ZYXWTSRQNMLK

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Try yourself:What is the next term in the following series?
1, 4, 3, 9, 5, 16, 7, 25, 9, 36, 11, ?
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Try yourself:Calculate the sum of the series
1 + 1/4 + 1/16 + ______.
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Try yourself:Calculate the missing term.

625, 125, ?, 5, 1

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Hard

Around 25% of these type questions come in CAT - If your target is above 95%ile we recommend you to solve these questions as well.


Direction for Questions ( 1-2) - Study the following information carefully to answer the questions given below: S Q A 5 N % T 7 B 4 # J E $ 2 T D * 1 8 H 3 U @ 9 F W © K
Example 1: How many such consonants are there in the above arrangement, each of which is immediately followed by a vowel but not immediately preceded by a number?

(a) One 
(b) Two 
(c) Three 
(d) More than three
Ans. (a)
Solution: T7 is the only instance of a consonant followed by a number and not preceded by a number. Option (a) is correct.


Example 2: Which of the following is the seventh to the left of the fifteenth from the left end in the above arrangement?
(a) H
(b) B
(c) 1
(d) 7

Ans. (d)
Solution: The fifteenth from the left is ‘2’ while the 7th to the left of 2 is ‘7’ itself. Option (d) is correct.

Try yourself:Direction for Questions: Study the following information carefully to answer the questions given below:

S Q A 5 N % T 7 B 4 # J E $ 2 T D * 1 8 H 3 U @ 9 F W © K 

How many such consonants are there in the above arrangement, each of which is either immediately preceded by a vowel or immediately followed by a symbol but not both?

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Try yourself:The letters skipped between adjacent letters is in the order of 1, 2, 3, 4, ..... Which alternative follows this rule ?
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Try yourself:Which of the following will come in place of the question mark (?) in the following sequence?

16D7, 18G10, 21KI4, 25P19, ?

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