LR - Series - Previous Year CAT/MBA Questions
The best way to prepare for LR - Series is by going through the previous year LR - Series omet questions. Here we bring you all previous year LR - Series omet questions along with detailed solutions.
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Arrange the following words in a meaningful sequence and choose the most appropriate sequence from the given alternatives.
(A) Rain
(B) Monsoon
(C) Rescue
(D) Flood
(E) Shelter
(F) Relief
- (a)
(A), (B), (C), (D), (E), (F)
- (b)
(A), (B), (D), (E), (C), (F)
- (c)
(B), (A), (D), (C), (E), (F)
- (d)
(D), (A), (B), (C), (F), (E)
Answer: Option C
Text Explanation :
Workspace:
Find the next term of the series: 1, 2, 4, 7, 11, 16, 22, ___
- (a)
28
- (b)
27
- (c)
26
- (d)
29
Answer: Option D
Text Explanation :
Add consecutive naturals numbers starting from 1 in each of the given terms to obtain the next term.
1 + 1 = 2
2 + 2 = 4
4 + 3 = 7
7 + 4 = 11
11 + 5 = 16
16 + 6 = 22
⇒ 22 + 7 = 29
Hence, option (d).
Workspace:
Find the next term of the sequence: V2U2W, V2U2W2, V2U2W3, ___
- (a)
V2U2W3
- (b)
V2U2W4
- (c)
V2U2W5
- (d)
None of these
- (e)
Exponent of W keeps increasing in each subsequent term.
Hence, option (b).
Answer: Option B
Text Explanation :
Workspace:
Find the wrong term of the series and which number should replace it to make the sequence correct: 24, 34, 36, 51, 48, 68, 60, 85, 70, 102.
- (a)
70, 72
- (b)
60, 58
- (c)
68, 70
- (d)
48, 60
Answer: Option A
Text Explanation :
Alternate terms form 2 different series.
34, 51, 68, 85, 102 is an AP with common difference of 17
24, 36, 48, 60, 70 is an AP with common difference of 12.
In this series instead of 70, 72 should have been there.
Hence, option (a).
⇒∴
Workspace:
Find the next term of the series: 1, 3, 7, 13, 21, 31, ___
- (a)
41
- (b)
43
- (c)
45
- (d)
None of these
- (e)
Add consecutive even naturals numbers starting from 2 in each of the given terms to obtain the next term.
1 + 2 = 3
3 + 4 = 7
7 + 6 = 13
13 + 8 = 21
21 + 10 = 31⇒ 31 + 12 = 43
Hence, option (b).
Answer: Option B
Text Explanation :
Workspace:
Find the missing term of the sequence:
Tue, Wed, Fri, Mon, ?, Wed
- (a)
Thursday
- (b)
Saturday
- (c)
Friday
- (d)
Sunday
Answer: Option C
Text Explanation :
Tue + 1 day = Wed
Wed + 2 days = Fri
Fri + 3 days = Mon
Mon + 4 days = Fri
Fri + 5 days = Wed
Hence, option (c).
Workspace:
Find the logically correct sequence
1. Pune
2. Aga Khan Palace
3. World
4. India
5. Maharashtra
- (a)
21543
- (b)
21453
- (c)
34521
- (d)
45321
Answer: Option A
Text Explanation :
Agha Khan Palace (2) is in Pune (1)
Pune (1) is in Maharashtra (5)
Maharashtra (5) is in India (4)
India (4) is in World (3)
Correct sequence is 21543
Hence, option (a).
Workspace:
Complete the series; DIT, GMQ, KQM, PUH,____
- (a)
VYB
- (b)
UYB
- (c)
VXC
- (d)
TUJ
Answer: Option A
Text Explanation :
Considering the first letters of each term.
There are 2 alphabets in between D and G (E and F).
There are 3 alphabets between G and K (H, I and J).
There are 4 alphabets between K and P (L, M, N, and O)
Hence, there will be 5 alphabets between P and the required letter. Thus, the required letter will be V (Q, R, S, T and U)
Considering the second letter of each term.
There are three alphabets between each of the second terms, I and M (J, K, L), M and Q (N, O, P), and Q and U (R, S, T).
Hence, there will be three terms between the required term and U, i.e., V, W, X. Thus, the required second term is Y.
Hence, option (a).
Workspace:
Complete the series; FAQ, AQF, ___, FAQ, AQF
- (a)
QAF
- (b)
QFA
- (c)
FQA
- (d)
AFQ
Answer: Option B
Text Explanation :
From the 2nd term onwards,
1st letter of every term is 2nd letter of the previous term
2nd letter of every term is 3rd letter of the previous term
3rd letter of every term is 1st letter of the previous term
2nd term is AQF so as per the above logic third term will be QFA.
Hence, option (b).
Workspace:
Complete the sequence: 24, __, 48, 63
- (a)
35
- (b)
14
- (c)
37
- (d)
39
Answer: Option A
Text Explanation :
All the terms are of the form
52 - 1 = 24,
72 - 1 = 48,
82 - 1 = 63
∴ 62- 1 = 35
Hence, option (a).
Workspace:
Complete the following sequence:
5, 72, 412, 2658, __________?
- (a)
12772
- (b)
21264
- (c)
21512
- (d)
18876
Answer: Option C
Text Explanation :
The series is in the form of 2nan + 62 (n − 1), n > 1, where a1 = 5
For n = 2, a2 = 5 × 2 + 62 × 1 = 72
For n = 3, a3 = 72 × 4 + 62 × 2 = 412
For n = 4, a4 = 412 × 6 + 62 × 3 = 2658
For n = 5, a5 = 2658 × 8 + 62 × 4 = 21512
Thus the correct option is C.
Workspace:
Complete the given sequence
63, 215, 511, 999
- (a)
1330
- (b)
1727
- (c)
1335
- (d)
1735
Answer: Option B
Text Explanation :
The logic for the Given sequjence is;
43 – 1 = 63
63 – 1 = 215
83 – 1 = 511
103 – 1 = 999
So, the next number in the sequence will be;
123 – 1 = 1727
Hence, option (b).
Workspace:
Find the value of X.
- (a)
299
- (b)
399
- (c)
298
- (d)
308
Answer: Option A
Text Explanation :
The logic is 54 x 7 = (79 + X)
Thus, X = 378 – 79 = 299
Hence, option (a)
Workspace:
Insert the missing number
- (a)
35
- (b)
48
- (c)
72
- (d)
120
Answer: Option B
Text Explanation :
Middle number = (difference between numbers of left column) × (sum of numbers of right column)
i.e. 80 = (15 – 5) × (2 + 6) = (10) × (8) and 65 = (9 – 4) × (7 + 6) = (5) × (13)
∴ ? = (13 – 11) × (16 + 8) = 2 × 24 = 48
Hence, option (b).
Workspace:
In the following question, one term in the number series is wrong. Find out the wrong term.
10, 26, 74, 218, 654, 1946, 5834
- (a)
654
- (b)
26
- (c)
1946
- (d)
218
Answer: Option A
Text Explanation :
The logic is: given term = (previous term) × 3 – 4
This pattern is broken for 654 i.e.(218 × 3) – 4 = 650
Hence, the wrong term is 654.
Hence, option (a).
Workspace:
Based on the number series given, fill in the missing number.18, 37, 76, 155, ________, 633, 1272
- (a)
322
- (b)
314
- (c)
341
- (d)
250
Answer: Option B
Text Explanation :
The Pattern here is,
18 × 2 + 1 = 37,
37 × 2 + 2 = 76,
76 × 2 + 3 = 155,
So,
155 × 2 + 4 = 314,
314 × 2 + 5 = 633,
633 × 2 + 6 = 1272,
Hence, option (b).
Workspace:
Complete the series:EPFS, GPHS, IPJS, _________, MPNS
- (a)
OPLS
- (b)
KPMS
- (c)
LMPS
- (d)
KPLS
Answer: Option D
Text Explanation :
The 2nd and 4th alphabets are constant.
For 1st letter: E + 2 = G, G + 2 = I, I + 2 = K, K + 2 = M
Similarly, 3rd letter: F + 2 = H, H + 2 = J, J + 2 = L, L + 2 = N
Hence, option (d).
Workspace:
Select the correct option to fill in the blank space/s
c_bba_cab_ac_ab_ac
- (a)
b, c, b, a, c
- (b)
c, a, b, c, b
- (c)
a, c, c, b, c
- (d)
a, c, b, c, b
Answer: Option D
Text Explanation :
Substitute the options into the blanks and try to find whether a sequence is formed. The sequence ‘cabbac’ repeats itself.
Hence, option (d).
Workspace:
Select the correct option to fill in the blank space/s
B2CD, _____, BCD4, _____, BC6D
- (a)
BC3D; B5CD
- (b)
BC2D; BC3D
- (c)
BC3D; B3CD
- (d)
BC3D; BC5D
Answer: Option A
Text Explanation :
The subscript in the terms follows the pattern: 2 _ 4 _ 6.
Hence, the subscript in the missing terms is 3 and 5 respectively.
Also, the position of the subscript follows the pattern B _ D _ C. Hence, it should be with the letters C and B respectively in the missing terms.
Hence, option (a).
Workspace:
Select the correct option to fill in the blank space/s
P3, M8, ____, G24, D35
- (a)
K15
- (b)
J13
- (c)
I13
- (d)
J15
Answer: Option D
Text Explanation :
There is a gap of two letters between the given letters. Thus, the letter to be filled in the blank space would be ‘J’. Second difference between the numbers is common. Therefore, the number would be 8 + 7 = 15.
Hence, option (d).
Workspace:
In the following series, what numbers should replace the question marks?
–1, 0, 1, 0, 2, 4, 1, 6, 9, 2, 12, 16, ? ? ?
- (a)
11, 18, 27
- (b)
–1, 0, 3
- (c)
3, 20, 25
- (d)
Cannot be ascertained
Answer: Option C
Text Explanation :
This series contains three series in itself.
Series 1 (T1, T4, T7, T10): –1, 0, 1, 2 (AP with a common difference of +1)
Series 2 (T2, T5, T8, T11): 0, 2, 6, 12 (Differences between two terms increase by 2)
Series 3 (T3, T6, T9, T12): 1, 4, 9, 16 (Squares of consecutive numbers)
The next three numbers will thus be 3, 20 and 25.
Hence, option (c).
Workspace:
If IQS : LNV, then JRM : ?
- (a)
OKS
- (b)
MOP
- (c)
NIP
- (d)
MOQ
Answer: Option B
Text Explanation :
Considering the positions of the letters in the alphabet,
I + 3 = L, Q – 3 = N and S + 3 = V
So J + 3 = M, R – 3 = O and M + 3 = P.
Hence the correct analogy is JRM : MOP
Hence, option (b).
Workspace:
Find the missing alphabet.
- (a)
Y
- (b)
O
- (c)
D
- (d)
G
Answer: Option C
Text Explanation :
The position numbers of the letters in the alphabet are as follows:
We can see that in each column the number in the third row is the product of the numbers in the first and second rows.
Thus the missing number is 20/5 = 4
The fourth letter of the alphabet is D.
Hence, option (c).
Workspace:
Which four bits can be joined together to form two words that have opposite meanings?
ERT, UCE, DES, END, EXP, EAR, AND, SIP, RED, GOS
1 2 3 4 5 6 7 8 9 10
- (a)
2, 5, 7, 9
- (b)
1, 3, 8, 10
- (c)
1, 5, 8, 10
- (d)
2, 4, 7, 8
Answer: Option A
Text Explanation :
Consider option 1 – 2,5,7,9.
If we join 2 and 9, we get REDUCE and if join 5 and 7, we get EXPAND. Reduce and Expand are antonyms.
Hence, option (a).
Workspace:
In each of the following letter series, some of the letters are missing, which are given below it. Choose the correct alternative.
D_F_DEE_D_EF_DE_F
- (a)
EFFDED
- (b)
EFFDDF
- (c)
EFFDFE
- (d)
None of the above
Answer: Option C
Text Explanation :
If we split the alphabets in a group of 3 we get following arrangement:
D__F | __DE | E__D | __EF | __DE | __F
Now, if we put option 3, we get:
DEF | FDE | EFD | DEF | FDE | EF
If we see the pattern it is consistent in the sense that the third alphabet in each subset is the first alphabet in the next subset and the order is cyclic. (D, E, F or F, D, E or E, F, D).
Hence, option (c).
Workspace:
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