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Question 751

DSSSB Junior Assistant (LDC) 2025• Mental Ability & Reasoning 2

The next term will be : 

Z1A, X2D, V6G, T21J, R88M, P445P, ?

  1. AOption (a)

    N2676S

  2. BOption (b)

    N2676T

  3. COption (c)

    T2670N

  4. DOption (d)

    T2676N

View answer & explanation

Correct answer

Answer: (a)A.

N2676S

Why this answer is correct

Z1A, X2D, V6G, T21J, R88M, P445P, ?

The pattern followed here is,

The logic for numbers is,

1 x 1 + 1 = 2,

2 x 2 + 2 = 6,

6 x 3 + 3 = 21,

21 x 4 + 4 = 88,

88 x 5 + 5 = 445,

445 x 6 + 6 = 2676

Hence, the next term will be N2676S.

Question 752

DSSSB Junior Assistant (LDC) 2025• Mental Ability & Reasoning 2

Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statements.

Statements:

  1. Some table are chair.
  2. Some chair are desk.

Conclusions:

I. Some tables are desk.

II. Some chairs are not desk.

III. No desk is a table.

  1. AOption (a)

    Either I or III follows

  2. BOption (b)

    Either I or II and III follows

  3. COption (c)

    Either I or III and II follows

  4. DOption (d)

    Only II follows

View answer & explanation

Correct answer

Answer: (a)A.

Either I or III follows

Why this answer is correct

Least possible venn diagram is:

Conclusions

I. Some tables are desks → False.

There is no direct relationship between desk and table so, no conclusion can be derived.

II. Some chairs are not desks → False.

Some chairs are desks but there is no information about the remaining chairs so, the conclusion is considered false.

III. No desk is a table → False.

There is no direct relationship between desk and table so, no conclusion can be derived.

Here Conclusion I and III form complementary pairs and either of them has to be true. 

Hence, Either I or III follows is the correct answer.

Note: 

Conditions of Either-or case:

  1. The elements should be the same in both the statements.
  2. Individually both the conclusions should be false.
  3. One conclusion should be positive and one conclusion should be negative (Complementary pair)

The two complementary pairs are:

  1. All + Some not

  2. No + Some

Additional Information

Question 753

DSSSB Junior Assistant (LDC) 2025• Mental Ability & Reasoning 2

In a certain code language, 'APPLES' is written as 'AQQMET'. How will 'ORANGE' be written in that language? 

  1. AOption (a)

    SOCHEI

  2. BOption (b)

    OSAOHE

  3. COption (c)

    OSAHOE

  4. DOption (d)

    SOACHE

View answer & explanation

Correct answer

Answer: (b)B.

OSAOHE

Why this answer is correct

The logic followed here is:

Vowels are placed as it is.

Consonant are increased by +1.

Now,

'APPLES' is written as 'AQQMET',

Similarly, for 'ORANGE'

 

So, 'ORANGE' will be written as 'OSAOHE'.

Hence, the correct answer is "Option 2".

Question 754

DSSSB Junior Assistant (LDC) 2025• Mental Ability & Reasoning 2

Complete the following series.

PAW, UFB, YJF, BMI, ?

  1. AOption (a)

    DOK

  2. BOption (b)

    MOD

  3. COption (c)

    DOM

  4. DOption (d)

    DOO

View answer & explanation

Correct answer

Answer: (a)A.

DOK

Why this answer is correct

​

The pattern followed is:

Hence, the correct answer is "DOK".

Question 755

DSSSB Junior Assistant (LDC) 2025• Mental Ability & Reasoning 2

Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statements.

Statements:

  1. All truck are bus.
  2. No bus is a car.

Conclusions:

I. Some truck are cars.

II. All cars are trucks.

III. No car is a truck.

  1. AOption (a)

    Only I follows

  2. BOption (b)

    Either I or II follows

  3. COption (c)

    Only II follows

  4. DOption (d)

    Only III follows

View answer & explanation

Correct answer

Answer: (d)D.

Only III follows

Why this answer is correct

Least possible venn diagram is:

Conclusions

I. Some trucks are cars → False.

All trucks are buses and no bus is a car so, no truck can be a car. The conclusion is false.

II. All cars are trucks → False.

All trucks are buses and no bus is a car so, no truck can be a car. The conclusion is false.

III. No car is a truck → True.

All trucks are buses and no bus is a car so, no truck can be a car. The conclusion is true

Hence, only conclusion III follows is the correct answer.

Note: 

Conditions of Either-or case:

  1. The elements should be the same in both the statements.
  2. Individually both the conclusions should be false.
  3. One conclusion should be positive and one conclusion should be negative (Complementary pair)

The two complementary pairs are:

  1. All + Some not

  2. No + Some

Additional Information

Question 756

DSSSB Junior Assistant (LDC) 2025• Mental Ability & Reasoning 2

In the following question, select the related letter/letters from the given alternatives.

VERY : ASGA :: CUTE : ?

  1. AOption (a)

    GXVF

  2. BOption (b)

    TCEU

  3. COption (c)

    CTEU

  4. DOption (d)

    EUCT

View answer & explanation

Correct answer

Answer: (b)B.

TCEU

Why this answer is correct

The pattern follows here is:

Similarly,

Hence, the correct answer is "TCEU".

Question 757

DSSSB Junior Assistant (LDC) 2025• Mental Ability & Reasoning 2

Directions

Select the related word from the given alternatives.

Cape Town : South Africa : : Wellington : ?

  1. AOption (a)

    Sweden

  2. BOption (b)

    New Zealand 

  3. COption (c)

    Japan

  4. DOption (d)

    Hungary 

View answer & explanation

Correct answer

Answer: (b)B.

New Zealand 

Why this answer is correct

Here, Cape Town is the capital of South Africa. 

Similarly, 

Wellington is the capital of New Zealand. 

Hence, "New Zealand" is the correct answer.

Question 758

DSSSB Junior Assistant (LDC) 2025• Mental Ability & Reasoning 2

Eight friends, J, K, L, M, N, O, P and Q, are sitting in a row facing towards north and at equal distance from each other (not necessarily in the same order). L sits fourth to the right of K who sits at an extreme end. Two persons sit between L and M. J sits adjacent to O and M. Three persons sit between J and N. Q is an immediate neighbour of L and N. K is not a neighbour of P.Who sits at the extreme right position?

  1. AOption (a)

    K

  2. BOption (b)

    P

  3. COption (c)

    Q

  4. DOption (d)

    M

View answer & explanation

Correct answer

Answer: (b)B.

P

Why this answer is correct

  1. L sits fourth to the right of K who sits at an extreme end.

  2. Two persons sit between L and M. 

  3. J sits adjacent to O and M. 

  4. Three persons sit between J and N.

  5. Q is an immediate neighbour of L and N.

  6. K is not a neighbour of P.

‘P’ sits at the extreme right position

Hence, option 2 is the correct answer.

Question 759

DSSSB Junior Assistant (LDC) 2025• Mental Ability & Reasoning 2

Select the alphanumeric-group from the given alternatives which can replace the question mark (?) in the following series.

A121O, F169T, K225Y, P289D, ?

  1. AOption (a)

    U316I

  2. BOption (b)

    V361I

  3. COption (c)

    U361J

  4. DOption (d)

    U361I

View answer & explanation

Correct answer

Answer: (d)D.

U361I

Why this answer is correct

The table shows the place value of the alphabet from A to Z.

The logic followed here is:

Given series is A121O, F169T, K225Y, P289D, ?

So, "U361I" is the next series.

Hence, "Option (4)" is the correct answer.

Question 760

DSSSB Junior Assistant (LDC) 2025• Mental Ability & Reasoning 2

In an exam of 100 questions, a correct answer gives 1 mark but a wrong answer deducts 1 mark, and if a question is not attempted there is no deduction in marks. If a student attempted only 70% of the question and got 44 marks, then how many questions did he answer correctly?

  1. AOption (a)

    48

  2. BOption (b)

    50

  3. COption (c)

    57

  4. DOption (d)

    54

View answer & explanation

Correct answer

Answer: (c)C.

57

Why this answer is correct

Let us consider that the student has answered ‘x’ answers correctly.

Now, the student attempted only 70% of the given questions 

70% of 100 = 70

So, number of incorrect questions = 70 – x

The student scored 44 marks

So, according to question;

x – (70 – x) = 44

x – 70 + x = 44

2x = 70 + 44

2x = 114

x = 57

Hence, the student answered 57 questions correctly.