# Tricky questions of Reasoning for SSC CHSL

Q1. A man pointing to a photograph says, “The lady in the photograph is my nephew’s maternal grandmother.” How is the lady in the photograph related to the man’s sister who has no other sister?
(a) Cousin
(b) Sister-in-law
(c) Mother
(d) Mother-in-law

Directions (2): Study the number series given below and answer the questions that follow:
7  8  9  7  6  5  3  4  2  8  9  7  2  4  5  9  2  9  7  6  4  7
Q2. How many 7s are preceded by 9 and followed by 6?
(a) 2
(b) 3
(c) 4
(d) 5

Q3. If the words in the sentence, “She sells sea shells on the sea shore” are rearranged in the alphabetical order, which will be the middle word?
(a) shells
(b) she
(c) sea
(d) shore

Q4. In this question, a word is represented by only one set of numbers as given in any one of the alternatives. The sets of numbers given in the alternatives are represented by two classes of alphabets as in the two given matrices. The columns and rows of Matrix I are numbered from 0 to 4 and those of Matrix II from 5 to 9. A letter from these matrices can be represented first by its row and then the column number e.g., in the matrices for questions 1 to 4, M can be represented by 14, 21, etc.; O can be represented by 20, 32, etc. Similarly you have to identify the correct set for the word “MAIL” in each question.
(a) 57, 12, 31, 56
(b) 58, 21, 22, 86
(c) 66, 44, 42, 96
(d) 75, 30, 31, 87

Q5. In a row of boys, A is fifteenth from the left and B is fourth from the right. There are three boys between A and B. C is just left of A. What is C’s position from the right?
(a) 9th
(b) 10th
(c) 12th
(d) 13th

Q6. Five girls are sitting in a row. Rashi is not adjacent to Sulekha or Abha. Anuradha is not adjacent to Sulekha. Rashi is adjacent to Monika. Monika is at the middle in the row. Then, Anuradha is adjacent to whom out of the following?
(a) Rashi
(b) Sulekha
(c) Abha
(d) Monika

Direction (7-8): In each of the following question, a series is given with one term missing. Find out the missing term from the given alternatives.

Q7. 1, 3, 3, 6, 7, 9, ?, 12, 21
(a) 9
(b) 20
(c) 11
(d) 13

Q8. ajs, gpy, ?, sbk, yhq
(a) dmv
(b) mve
(c) oua
(d) qrv

Q9. Pointing to a photograph, a woman says, “This man’s son’s sister is my mother-in-law.” How is the woman’s husband related to the man in the photograph?
(a) Grandson
(b) Son
(c) Son-in-law
(d) Nephew

Q10. If in a certain code, 15789 is written as EGKPT and 2436 is written as ALUR, how is 24539 written in that code?
(a) ALGTU
(b) ALEUT
(c) ALGUT
(d) ALGRT

Q11.Select the related numbers from the given alternatives:
12 : 40 :: 15 : ?
(a) 49
(b) 52
(c) 39
(d) 51

Q12. The positions of how many digits in the number 529468173 will remain same when the digits are arranged in ascending order?
(a) Three
(b) One
(c) Two
(d) None

Q13. How many combinations of two-digit numbers having 8 can be made from the following numbers?
8, 5, 2, 1, 7, 6
(a) 9
(b) 11
(c) 10
(d) 12

Q14. In the following question, a series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.
 1 2 3 11 7 5 120 45 ?
(a) 19
(b) 16
(c) 15
(d) 17

Q15. In this question, five words are given. Which of them will come last if all of them are arranged alphabetically as in a dictionary?
(a) Heaven
(b) Hillock
(c) Hawker
(d) Hilt

Solutions

S1. Ans.(c)
Sol. Clearly, the lady is the grandmother of man’s sister’s son i.e., the mother of the mother of man’s sister’s son i.e., the mother of man’s sister.

S2. Ans.(a)
Sol. 7  8  9  6  5  3  4  2  8  9  7  2  4  5  9  2  9  7  6  4  7

S3. Ans.(b)
Sol. The correct alphabetical order is: on, sea, sells, she, shells, shore, the

S4. Ans.(b)
Sol. “M” = 58, 67, 76, 85, 99
“A” = 03, 12, 21, 30, 44.
“I” = 04, 13, 22, 31, 40.
“L” = 59, 68, 77, 86, 95

S5. Ans.(a)
Sol. Number of boys in the row = (15 + 4 + 3) = 22.
C is just left of A. So, C is 14th from the left end.
Number of boys to the right of C = (22 – 14) = 8.
So, C is 9th from the right end of the row.

S6. Ans.(a)
Sol. Clearly, the order is: Anuradha, Rashi, Monika, Sulekha, Abha.

S7. Ans.(d)
Sol. Clearly, the given sequence is a combination of two series:
I. 1, 3, 7, ?, 21
and II. 3, 6, 9, 12
The pattern followed in I is +2, +4, … and the pattern followed in II is +3.
So, missing number = 7 + 6 = 13.

S8. Ans.(b)

S9. Ans.(a)
Sol. Man’s son’s sister – Man’s daughter.
So, the man’s daughter is the mother of the woman’s husband. Thus, the woman’s husband is the grandson of the man in the photograph.

S10. Ans.(c)
Sol.
 Number 1 5 7 8 9 2 4 3 6 Code E G K P T A L U R

S11. Ans.(a)
Sol. 12 × 3 = 36 + 4 = 40
Similarly, 15 × 3 = 45 + 4 = 49

S12. Ans.(c)
Sol.
 Original number                                               5  2  9  4  6  8  1  7  3 Number formed by arranging                      1  2  3  4  5  6  7  8  9 digits in ascending order
Clearly, the positions of 2 and 4 remain unaltered.

S13. Ans.(b)
Sol. The possible two-digit numbers are : 88, 85, 82, 81, 87, 86, 58, 28, 18, 78, 68.
Number of combinations = 11

S14. Ans.(b)
Sol. In 1st column:
112 – 12 = 120
In 2nd column:
72 – 22 = 45
Similarly in 3rd column:
52 – 32 = 16

S15. Ans.(d)
Sol. Order According to dictionary:
Hawker, Heaven, Hillock, Hilt

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