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Question 531

DSSSB Junior Assistant (LDC) 2025• Mental Ability & Reasoning 1

In the following question, select the one which is different from the other three responses.

  1. AOption (a)

    DWKP

  2. BOption (b)

    GTNM

  3. COption (c)

    LOQJ

  4. DOption (d)

    FUMN

View answer & explanation

Correct answer

Answer: (c)C.

LOQJ

Why this answer is correct

  1. DWKP → D is reverse of W, K is reverse of P and K – D = W – P = 7

  2. GTNM → G is reverse of T, N is reverse of M and N – G = T – M = 7

  3. LOQJ → L is reverse of O, Q is reverse of J and Q – L = O – J = 5

  4. FUMN → F is reverse of U, M is reverse of N and M – F = U – N = 7

Hence, LOQJ is the odd one.

Question 532

DSSSB Junior Assistant (LDC) 2025• Mental Ability & Reasoning 1

Select the odd word from the given alternatives.

  1. AOption (a)

    Port Louis

  2. BOption (b)

    Yerevan

  3. COption (c)

    Manama

  4. DOption (d)

    Georgia

View answer & explanation

Correct answer

Answer: (d)D.

Georgia

Why this answer is correct

The logic followed here is:

WordsTheir meanings
Port LouisCapital of Mauritius
YerevanCapital of Armenia
ManamaCapital of Bahrain
GeorgiaIt is a country and its capital is Tbilisi

 

Port Louis, Yerevan, Manama all are the capital of the country except Georgia which itself is a country.

Hence, the correct answer is "Georgia".

Additional Information

  • Recently, Armenia is in the news because of the war with Azerbaijan over the disputed area of Nagorno-Karabakh.
  • Bahrain is in the news for the signing of the historic Abraham Accord, which is the first Arab-Israeli peace deal in 26 years.

Question 533

DSSSB Junior Assistant (LDC) 2025• Mental Ability & Reasoning 1

In a row of boys, Mohan is 33rd from the left end. Lallu is 17th to the right of Mohan. If Lallu is 35th from right end, then what will be the position of Mohan from the right end?

  1. AOption (a)

    49

  2. BOption (b)

    50

  3. COption (c)

    51

  4. DOption (d)

    52

View answer & explanation

Correct answer

Answer: (d)D.

52

Why this answer is correct

Position of Mohan from Left: 33

Lallu’s position = 17th to the right of Mohan.

So Lallu’s position from left end is 33 + 17 = 50.

Lallu is 35th from right end.

Total Numbers of boys sitting in the row = 50 + 35 - 1 = 84

Mohan’s position from Right end = 84 - 33 + 1 = 52

Hence, the position of mohan from the right end is 52.

Question 534

DSSSB Junior Assistant (LDC) 2025• Mental Ability & Reasoning 1

In a certain code language, 875 means ‘wax find radar’, 948 means ‘radar work true’, and 519 means ‘find work safe’. Find the code for ‘true’?

  1. AOption (a)

    8

  2. BOption (b)

    4

  3. COption (c)

    5

  4. DOption (d)

    1

View answer & explanation

Correct answer

Answer: (b)B.

4

Why this answer is correct

Hence, ‘4’ is the code of ‘true’.

Question 535

DSSSB Junior Assistant (LDC) 2025• Mental Ability & Reasoning 1

In the following question meaning of symbols are given. Read them carefully and answer the question.

A % B means A is paternal uncle of B

A + B means A is mother of B

A = B means A is brother of B

A # B means A is husband of B

How is ‘Z’ related to ‘L’ in the expression ‘H = F + Z # P + K % L’?

  1. AOption (a)

    Aunt

  2. BOption (b)

    Grandmother

  3. COption (c)

    Grandfather

  4. DOption (d)

    Niece

View answer & explanation

Correct answer

Answer: (c)C.

Grandfather

Why this answer is correct

A is
Code%+=#
MeaningPaternal UncleMotherBrotherHusband
of B

H = F + Z # P + K % L → H is the brother of F, F is the mother of Z, Z is the husband of P, P is the mother of K, K is the paternal uncle of L.

Clearly, ‘Z’ is the grandfather of ‘L’.

Question 536

DSSSB Junior Assistant (LDC) 2025• Mental Ability & Reasoning 1

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.

MF19, RK29, WP39, ?

  1. AOption (a)

    BM23

  2. BOption (b)

    BU23

  3. COption (c)

    BU19

  4. DOption (d)

    BW19

View answer & explanation

Correct answer

Answer: (b)B.

BU23

Why this answer is correct

The pattern followed here is:

M – 7 = F, M = 13, F = 6, Number = 13 + 6 = 19

M + 5 = R

R – 7 = K, R = 18, K = 11, Number = 18 + 11 = 29

R + 5 = W

W – 7 = P, W = 23, P = 16, Number = 23 + 16 = 39

Next term will be:

W + 5 = B

B – 7 = U, B = 2, U = 21, 2 + 21 = 23.

Hence, ‘BU23’ will complete the given series.

Question 537

DSSSB Junior Assistant (LDC) 2025• Mental Ability & Reasoning 1

In a certain code language ‘BACKGROUND’ is written as ‘GKCABDNUOR’. How will you write ‘COLLECTION’ in the same code language?

  1. AOption (a)

    FLONCIOCT

  2. BOption (b)

    ELLOCNOITC

  3. COption (c)

    ELOLNCITC

  4. DOption (d)

    ELLCONOICT

View answer & explanation

Correct answer

Answer: (b)B.

ELLOCNOITC

Why this answer is correct

The logic is,

The pattern followed is,

Similarly,

Hence, ‘ELLOCNOITC’ is the correct answer.

Question 538

DSSSB Junior Assistant (LDC) 2025• Mental Ability & Reasoning 1

Identify the figure that completes the pattern of the given figure.

  1. AOption (a)

  2. BOption (b)

  3. COption (c)

  4. DOption (d)

View answer & explanation

Correct answer

Answer: (a)A.

Why this answer is correct

We see that option 1) completes the pattern and after completing the pattern, figure should look like:

Hence, the correct answer is option 1).

Question 539

DSSSB Junior Assistant (LDC) 2025• Mental Ability & Reasoning 1

If in a non – leap year, the Independence day was celebrated on Tuesday, the on which day, World Teacher’s day will be celebrated in the same year?

  1. AOption (a)

    Monday

  2. BOption (b)

    Thursday

  3. COption (c)

    Wednesday

  4. DOption (d)

    Friday

View answer & explanation

Correct answer

Answer: (b)B.

Thursday

Why this answer is correct

World Teacher’s day = 5th October

Independence day = 15th August

Total number of days from 16th August to 5th october

= 16 + 30 + 5 

= 51 days

= 2 odd days (remainder after dividing by 7) 

15th August was on Tuesday. Therefore, 1st October will be after 2 days from tuesday.

Thus, 5th October will be on Thursday.

Hence, “Thursday” is the correct answer.

Mistake PointsDon't get confused between the 'Teacher's day' and the 'World Teacher's Day'.

The question is talking about 'World Teacher's Day'.

World Teacher's Day is celebrated on 5 October.

Teacher's Day is celebrated on 5 September.

Question 540

DSSSB Junior Assistant (LDC) 2025• Mental Ability & Reasoning 1

Directions

In the question below are given few statements followed by few conclusions. You have to take the given statements to be true even if they seem to be at variance with the commonly known facts and then decide which of the given conclusions logically follows from the given statements, disregarding commonly known facts.

Statements:

Some hills are rivers.

All rivers are trees.

Some trees are flowers.

Conclusions:

I. Some flowers are trees.

II. Some trees are hills.

  1. AOption (a)

    Only conclusion I follows

  2. BOption (b)

    Only conclusion II follows

  3. COption (c)

    Both conclusion I and conclusion II follows 

  4. DOption (d)

    Neither Conclusion I nor conclusion II follows

View answer & explanation

Correct answer

Answer: (c)C.

Both conclusion I and conclusion II follows 

Why this answer is correct

The possible Venn diagram is as follows:

For conclusions:

I. Some flowers are trees → True (Some trees are flowers then some flowers are also trees)

II. Some tins are trucks → True (All rivers are trees then some trees are rivers and some hills are rivers. Therefore some trees are hills)

Hence, "Both conclusions I and conclusion II follow" is correct.

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