SSC CHSL 2015 PYQs

Question 1

From the given alternatives, select the word which CANNOT be formed using the letters of the given word.

Environment

Accepted Answer

The word 'reign' refers to the period of rule of a monarch or the dominance of something. It fits the context of 'environment' as a prevailing influence.

Question 2

From the given alternatives, select the word which CANNOT be formed using the letters of the given word.

RAILWAYSTATION

Accepted Answer

The word OSTITIS cannot be formed from RAILWAYSTATION because RAILWAYSTATION contains only one 'S' and one 'T', while OSTITIS requires two 'S's and two 'T's.

Question 3

opo_ _ po _ ppo _ _ pppo _ op _ p

Accepted Answer

The series follows a pattern of 'opoo'. Filling the blanks accordingly, we get opoo opoo ppoo pppo opoo p. Thus, the missing letters are opoooop.

Question 4

i _ _ _ ij _ l_ _ _ l

Accepted Answer

The pattern is a repeating sequence of 'ijkl'. Filling the blanks accordingly, we get 'ijkl' repeated. Thus, the missing letters are jklkijk.

Question 5

RORRIM : MIRROR : : TNESERP : ?

Accepted Answer

The pattern is reversing the spelling of the word. MIRROR spelled backward is RORRIM. Similarly, TNESERP is PRESENT spelled backward.

Question 6

In a line, Naresh is17thfrom the left &22ndfrom the right How many students are there in the line ?

Accepted Answer

To find the total number of students, add Naresh's position from the left (17) and from the right (22), then subtract 1 because Naresh is counted twice. So, 17 + 22 - 1 = 38.

Question 7

65778721?21445566

Accepted Answer

The pattern involves summing the digits of each number. For 6577, 6+5+7+7=25. For 8721, 8+7+2+1=18. The difference is 25-18=7. Applying this to the second pair, 2+1+4+4=11 and 5+5+6+6=22. The difference is 22-11=11. The missing number is 22.

Question 8

If 0, 1, 2, 3,..., 9 is written as a, b, c, d,...,j, then finddc×f−(bf−d)×d.

Accepted Answer

Substitute the given values: d=3, c=2, f=5, b=1. The expression becomes 32 × 5 - (15 - 3) × 3. Calculate: 160 - (12) × 3 = 160 - 36 = 124. Convert 124 back to letters: b=1, c=2, e=4, so 124 is bce.

Question 9

ab_ _ _ b _ bbaa _

Accepted Answer

The pattern is 'abbaab'. Filling the blanks with 'baaab' completes the series as 'abbaab abbaab abbaab'. This is a repeating block of six characters.

Question 10

Same equations have been solved on the basis of certain system. Find the correct answer for the unsolved equations on that basis ?If72×19=23,13×48=35and16×43=18then39×22=?

Accepted Answer

The pattern is the sum of the product of digits of both numbers. For 39 x 22: (3 x 9) + (2 x 2) = 27 + 4 = 31.

Question 11

Suresh walked 7 km east and turned to his left walked 4 kms. He then turned to his right and walked 5 kms. Finally, he again turned to his right and walked 4 kms. In which direction is he now, from his starting point ?

Accepted Answer

Suresh moves 7km East, then 4km North, then 5km East, then 4km South. The 4km North and 4km South cancel out. He is 7+5=12km East of his starting point.

Question 12

If the mirror image of a clock shows quarter past three, then what is the original time ?

Accepted Answer

To find the original time from a mirror image, subtract the mirror time from 11:60. Here, 11:60 - 3:15 = 8:45. So, the original time is 8:45.

Question 13

Sunder travelled 5 km towards North, then turned towards East and travelled 6 km, then turned South and travelled 5 km. How far is he from the starting point ?

Accepted Answer

Sunder travels 5 km North and then 5 km South, effectively cancelling out the vertical displacement. He is only 6 km East from his starting point.

Question 14

Mathematics : Logic :: Science : ?

Accepted Answer

Logic is the fundamental method used in Mathematics. Similarly, Experiments are the fundamental method used in Science to gain knowledge.

Question 15

Four wards are given, Arrange them in decreasing order of the number of vowels occurring in the word, each vowel being counted with multiplicity. Should there be a  tie, use dictionary order.1. Assassination2. Rejuvenation3. Mississippi4. Acrimonious

Accepted Answer

Count vowels: Acrimonious (7), Rejuvenation (6), Assassination (6), Mississippi (4). Arrange by vowel count (decreasing). For ties (Rejuvenation, Assassination), use dictionary order: Assassination comes before Rejuvenation. So, 4, 1, 2, 3.

Question 16

EAC : KGI :: HDF ?

Accepted Answer

The pattern is +6, +6, +6 for each letter. E(+6)=K, A(+6)=G, C(+6)=I. Applying this to HDF: H(+6)=N, D(+6)=J, F(+6)=L. So, HDF : NJL.

Question 17

If LISTEN is coded as 593417 then SILENT is coded as

Accepted Answer

Assign each letter in LISTEN its corresponding digit. Then, map the letters of SILENT to their respective digits from the established code to find the answer.

Question 18

In a certain code MISCHIEF is written as NKVGMOLN, then how  is RELIEVED written in that code ?

Accepted Answer

The pattern adds an increasing number to the positional value of each letter: +1, +2, +3, and so on. Applying this to RELIEVED: R(18)+1=S(19), E(5)+2=G(7), L(12)+3=O(15), which results in SGOMJBLL.

Question 19

From the given alternatives, select the word which CANNOT be formed using the letters of the given word.

MANIPULATE

Accepted Answer

The word 'POLLUTE' is formed by rearranging some letters from 'MANIPULATE'. Similarly, 'PLATE' is formed by rearranging letters from 'MANIPULATE'. The question asks for the word related to 'PLATE' in the same way 'MANIPULATE' is related to 'POLLUTE'. This implies finding a word that can be formed by rearranging letters of 'PLATE'. However, the question is flawed as 'POLLUTE' is given as an option. The intended logic is that 'POLLUTE' is a sub-word of 'MANIPULATE'. Following this, 'PLATE' is also a sub-word of 'MANIPULATE'. The question asks for the word that is related to 'PLATE' in the same way 'MANIPULATE' is related to 'POLLUTE'. This is a flawed question. Assuming the question meant to ask which word is formed by rearranging letters of 'MANIPULATE' to form 'POLLUTE', and then asking for a similar rearrangement for 'PLATE', the options are confusing. If the question is a direct analogy, then MANIPULATE -> POLLUTE, then PLATE -> ? The only option that is a sub-word of MANIPULATE is POLLUTE. This question is poorly framed. Let's assume the question is asking for a word that can be formed by rearranging letters of 'MANIPULATE' and is given as an option. In that case, 'POLLUTE' is the only option that can be formed from 'MANIPULATE'.

Question 20

If + means x, - means +, x means ÷ and ÷ means -, then 9 x 4 + 2  - 5 x 10 ÷ 3 = ?

Accepted Answer

Substitute the given symbols: 9 ÷ 4 x 2 + 5 ÷ 10 - 3. Perform division and multiplication first, then addition and subtraction. This simplifies to 2.