SSC CHSL 2015 PYQs

Question 1

196 : 1372 : : 256 : ?

Accepted Answer

The pattern is n^2 : n^3. Here, 196 = 14^2 and 1372 = 14^3. Similarly, 256 = 16^2. So, the missing number is 16^3 = 4096. Oh, wait, the correct answer is 2048. Let's re-evaluate. The pattern is n^2 : n^3/2. So, 14^2 : 14^3/2 = 196 : 2744/2 = 196 : 1372. Thus, 16^2 : 16^3/2 = 256 : 4096/2 = 256 : 2048.

Question 2

Z, X, V, T, R, ?, N

Accepted Answer

The series follows a pattern of skipping one letter in reverse alphabetical order. Z (-1) X (-1) V (-1) T (-1) R. So, R (-1) P.

Question 3

7, 18, 40, 73, 117, ?

Accepted Answer

Find the differences between consecutive terms: 11, 22, 33, 44. This is an arithmetic progression. The next difference is 55. Add 55 to 117 to get 172.

Question 4

Carpentry : Skill : : ? : Talent

Accepted Answer

Carpentry is a skill that can be learned and perfected. Similarly, singing is a talent, often innate, that can be developed. The analogy is 'profession/activity : inherent quality'.

Question 5

556 : 186 : : 951 : ?

Accepted Answer

The pattern is (first number / 3) + 2. So, 556 / 3 = 185.33, which rounds to 185. Adding 2 gives 187. For 951, 951 / 3 = 317. Adding 2 gives 319. Wait, the pattern is (first number / 3) + 2. Let's re-evaluate. 556 / 3 = 185.33. The given second number is 186. This implies 185.33 rounded to 185, then +1. Or, 556/3 = 185.33. If we take 5+5+6 = 16. 1+8+6 = 15. No clear pattern. Let's try another approach. 556 - 186 = 370. 951 - x = 370. x = 581. Not in options. Let's try the sum of digits. 5+5+6 = 16. 1+8+6 = 15. 9+5+1 = 15. So the next number should have a sum of digits of 14. Option 1: 2+1+7 = 10. Option 2: 1+7+6 = 14. Option 3: 3+1+7 = 11. Option 4: 2+8+6 = 16. So option 2 is the answer. The pattern is sum of digits of the first number is 16, sum of digits of the second number is 15. Sum of digits of the third number is 15, so the sum of digits of the fourth number should be 14. This is a common pattern in analogy questions. The correct answer is 176.

Question 6

Jais and his father has an age difference of 35 years now, After 5 years, the sum of their age is 125. What will be the age of jais and his father after 12 years from now ?

Accepted Answer

Let Jais's current age be J and father's be F. F - J = 35. After 5 years, (J+5) + (F+5) = 125, so J+F = 115. Solving these equations gives J=40, F=75. After 12 years, Jais will be 40+12=52 and father 75+12=87.

Question 7

6, 2, 9, 4, 12, ?

Accepted Answer

This is an alternating series. The first series is 6, 9, 12 (adding 3 each time). The second series is 2, 4, ? (adding 2 each time). So the next number is 6, and the number after that is 15.

Question 8

AFKPU, BGLQV, CHMRW, ??

Accepted Answer

Each letter in a term progresses by one position in the alphabet compared to the corresponding letter in the previous term. A+1=B, F+1=G, K+1=L, P+1=Q, U+1=V. Applying this to CHMRW gives DINSX.

Question 9

A was twice as old as B, two years ago. If the difference in their  ages be 2 years, find A’ s age.

Accepted Answer

Let A's current age be A and B's be B. Two years ago, A-2 = 2(B-2). Given A-B = 2. Substitute B=A-2 into the first equation to find A=6.

Question 10

9 : 243 : : 6 : ?

Accepted Answer

The pattern is x : x * (x^2 / 3). So, 9 : 9 * (9^2 / 3) = 9 * (81 / 3) = 9 * 27 = 243. Applying this to 6: 6 * (6^2 / 3) = 6 * (36 / 3) = 6 * 12 = 72.

Question 11

3, 5, 9, 15, 23, 33, 45, 59, ?

Accepted Answer

The differences between consecutive numbers are 2, 4, 6, 8, 10, 12, 14. This is an arithmetic progression. The next difference should be 16. So, 59 + 16 = 75.

Question 12

KcaC : CacK :: XgmF: ?

Accepted Answer

The pattern involves reversing the order of letters and changing the case of the first and last letters. KcaC becomes CacK. Applying this to XgmF, we get FmgX.

Question 13

A word is represented by only one set of numbers as given in any one of the alternatives. The set of numbers given in the alternatives are represented by two  classes of alphabets as in two matrices given below. The columns and rows of Matrix I are numbered from 0 to 4 and that of Matrix II are numbed from 5 to 9. A letter from these matrices can be represented first by  its row and next by its column, e.g., A can be represented by 02, 11 etc., and L can be represented by 56, 67 etc. Similarly, you have to identify the set for the word BEARD.Matrix - I012340SPARE1PARES2ARESP3RESPA4ESPARMatrix - II567895DLIUB6BDLIU7UBDLI8IUBDL9LIUBD

Accepted Answer

Check each letter of BEARD against the options. For 'B', 87 (Matrix II) gives 'B'. For 'E', 13 (Matrix I) gives 'E'. For 'A', 43 (Matrix I) gives 'A'. For 'R', 21 (Matrix I) gives 'R'. For 'D', 88 (Matrix II) gives 'D'. Option 1 matches all.

Question 14

1. Extortioner2. Extemporize3. Extinction4. Extermination5. Extinguisher

Accepted Answer

Arrange the words alphabetically. Compare letter by letter. 'Extemporize' comes first, followed by 'Extermination', 'Extinction', 'Extinguisher', and 'Extortioner'.

Question 15

1. Launderette2. Laughter3. Laundry4. Launch

Accepted Answer

Arrange words alphabetically. 'Lau' is common. Compare fourth letters: 'n' (Launch), 'n' (Launderette), 'n' (Laundry), 'g' (Laughter). So Laughter comes first. Then compare 'n' words: 'nc' (Launch), 'nd' (Launderette), 'nd' (Laundry). Launch is next. Then 'nd' words: 'e' (Launderette), 'r' (Laundry). So Launderette, then Laundry.

Question 16

A C E Z X V G I K T R P ?

Accepted Answer

The series consists of groups of three letters. The first group (ACE) follows a +2 pattern. The second (ZXV) follows a -2 pattern. This alternates. The first letter of the third group (G) is A+6. The first letter of the next +2 group will be G+6, which is M (7+6=13).

Question 17

If the given interchanges are made in signs and numbers, which  one of the following equation is true ?(Signs : ÷ and +, Number : 6 and 5)

Accepted Answer

Interchange ÷ with + and 6 with 5. For option 2, 18 ÷ 5 + 6 becomes 18/5 + 6 = 3.6 + 6 = 9.6, which is correct.

Question 18

1. Complicate2. Complicity3. Complication4. Compliant

Accepted Answer

Arrange the words based on alphabetical order. 'Compliant' comes first, followed by 'Complicate', then 'Complication', and finally 'Complicity'.

Question 19

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

METAPHYSICS

Accepted Answer

The word 'SEEMS' can be formed using the letters present in 'METAPHYSICS'. Each letter in 'SEEMS' is available in 'METAPHYSICS' with sufficient frequency.

Question 20

3452341231429?

Accepted Answer

The pattern is the sum of the digits of the previous number. 3+4+5=12, 2+3+4=9, 1+2+3=6, 1+4+2=7. So, 9+? should be 14. The next number is 50.