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Question 541

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

Direction: Study the following information carefully and answer the questions.

Z 2 @ P N S 7 8 A B & 5 K R 6 # L F 3 + D * 3 $ V E M 9 H 4 * O Q

If all the symbols are dropped from the above arrangement, which of the following will be the 5th to the right of 10th element from the right end$?

  1. AOption (a)

    9

  2. BOption (b)

    M

  3. COption (c)

    H

  4. DOption (d)

    V

View answer & explanation

Correct answer

Answer: (a)A.

9

Why this answer is correct

Given series - 

Left Side Z 2 @ P N S 7 8 A B & 5 K R 6 # L F 3 + D * 3 $ V E M 9 H 4 * O Q Right Side

1) after all the symbols are dropped series is

Left Side Z 2 P N S 7 8 A B 5 K R 6 L F 3 D 3 V E M 9 H 4 O Q Right Side

  1. As, Right – Right = Right

10th from the Right – 5th from the Right = 5th from the Right

Z 2 P N S 7 8 A B 5 K R 6 L F 3 D 3 V E M 9 H 4 O Q

Clearly, 5th from the Right is 9$

Question 542

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

Direction: Select the option that is related to the third term in the same way as the second term is related to the first term?

CUBE : EXGL : : WORKS : ?

  1. AOption (a)

    RYWRD

  2. BOption (b)

    YRWDR

  3. COption (c)

    YRWRD

  4. DOption (d)

    YRRWD

View answer & explanation

Correct answer

Answer: (c)C.

YRWRD

Why this answer is correct

The pattern follows here is:

Letters are getting added by series of prime numbers

Similarly,

  

Hence, YRWRD is the correct answer.

Question 543

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

A clock runs 5 min faster for every hour. If at 8 AM it shows the correct time (8 AM), and then what will defective clock show the time at 8 PM?

  1. AOption (a)

    7 AM

  2. BOption (b)

    7 PM

  3. COption (c)

    9 PM

  4. DOption (d)

    9 AM

View answer & explanation

Correct answer

Answer: (c)C.

9 PM

Why this answer is correct

We know that the clock runs 5 min faster for every hour.

Now time difference is 8 AM to 8 PM = 12 hrs.

Therefore, for 12 hours the clock will be ahead of time by 12 × 5 min = 60 min

So, the time will be 8 PM + 1 hr. = 9 PM.

Hence, the correct answer is 9 PM.

Question 544

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

Which two signs should be interchanged in the following question to make it correct?

96 × 12 + 40 - 3 ÷ 9 = 21

  1. AOption (a)

    ÷ and +

  2. BOption (b)
    • and  -
  3. COption (c)

    ÷ and ×

  4. DOption (d)

    × and +

View answer & explanation

Correct answer

Answer: (c)C.

÷ and ×

Why this answer is correct

Given expression : 96 × 12 + 40 - 3 ÷ 9 = 21

Option 1 : ÷ and +

96 × 12 ÷ 40 - 3 + 9

96 × 0.3 - 3 + 9

28.8 - 3 + 9

37.8 - 3

34.8

34.8 ≠ 21

 

Option 2 : + and  -

96 × 12 - 40 + 3 ÷ 9

96 × 12 - 40 + 0.33

1152 - 40 + 0.33

1152.33 - 40

1112.33

1112.33 ≠ 21

 

Option 3 :  ÷ and ×

96 ÷ 12 + 40 - 3 × 9

8 + 40 - 3 × 9

8 + 40 - 27

48 - 27

21

21 = 21

 

Option 4 : × and +

96 + 12 × 40 - 3 ÷ 9

96 + 12 × 40 - 0.33

96 + 480 - 0.33

576 - 0.33

575.67

575.67 ≠ 21

Hence, Option 3 is the correct answer.

Question 545

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

Directions

In the following question, assuming the given statements to be true, find which of the given conclusions is definitely true.

Statement:

R ≥ A ≤ B = M; O > G ≥ R; M > Q ≤ Z

  1. AOption (a)

    A < O

  2. BOption (b)

    B = Q

  3. COption (c)

    G < M

  4. DOption (d)

    R > B

View answer & explanation

Correct answer

Answer: (a)A.

A < O

Why this answer is correct

Given:

R ≥ A ≤ B = M; O > G ≥ R; M > Q ≤ Z

On Combining:

O > G ≥ R ≥ A ≤ B = M > Q ≤ Z

Conclusions:

  1. A < O → True (as O > G ≥ R ≥ A)
  2. B = Q → False (as B = M > Q; therefore B > Q)
  3. G < M → False (as G ≥ R ≥ A ≤ B = M; thus, a clear relation between G and M cannot be established)
  4. R > B → False (as G ≥ R ≥ A ≤ B; thus, a clear relation between R and B cannot be established)

Hence, “A < O” is definitely true among the given options.

Question 546

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

Choose the most appropriate option to complete the following series.

TK, MM, HP, EU, __

  1. AOption (a)

    BC

  2. BOption (b)

    AZ

  3. COption (c)

    CB

  4. DOption (d)

    ZA

View answer & explanation

Correct answer

Answer: (c)C.

CB

Why this answer is correct

The patter is as follows:

The difference is prime numbers i.e. 2, 3, 5, 7

Hence, “CB” is the correct answer.

Question 547

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

Four number-pairs have been given, out of which three are alike in some manner and one is different. Select the one that is different.

  1. AOption (a)

    7, 350

  2. BOption (b)

    6, 220

  3. COption (c)

    8, 520

  4. DOption (d)

    9, 738

View answer & explanation

Correct answer

Answer: (b)B.

6, 220

Why this answer is correct

The pattern followed here is,

Option 1 → 7, 350 → 73 + 7 = 350

Option 2 → 6, 220 → 63 + 6 ≠ 220

Option 3 → 8, 520 → 83 + 8 = 520

Option 4 → 9, 738 → 93 + 9 = 738

All option follows the same pattern, except ‘6, 220’

Hence, 6, 220 is the correct answer.

Question 548

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

In a certain code language,

“Red Blue Green” is written as “nlea loli reha”,

“A green parrot” is written as “ai toan reha” and

“The blue sky” is written as “eht nlea aksh”.

What is the code for ‘’red” in the specified code language?

  1. AOption (a)

    nlea

  2. BOption (b)

    loli

  3. COption (c)

    reha

  4. DOption (d)

    toan

View answer & explanation

Correct answer

Answer: (b)B.

loli

Why this answer is correct

The diagrammatic representation of the coded statements is as follows:

Wordgreenbluered
Coderehanlealoli

 

Hence, the code for ''red" is ''loli".

Question 549

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

Read the given information carefully and answer the questions related to it.

The eight friends A, B, C, D, E, F, G and H are sitting facing the centre of a circle, (not necessarily in the same order).

i. The location of A is the third to the right of F, who is sitting on the left of D on the second number.

ii. C and H are sitting face-to-face with each other.

iii. None of F and C are sitting next to B.

iv. B is not sitting in between H and A.

v. G is seated opposite A.

If E is interchanged with B, C is interchanged with G and A is interchanged with F, then who will be third to the right of C?

  1. AOption (a)

    F

  2. BOption (b)

    E

  3. COption (c)

    D

  4. DOption (d)

    B

View answer & explanation

Correct answer

Answer: (c)C.

D

Why this answer is correct

The arrangement will be as shown below:

If the location of E is replaced by B, the location of C is shifted from place of G and the location of A is replaced by F.

After replacement, the arrangement will be as shown below:

Hence, ‘D’ will be the third position on the right of C.

Question 550

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

In the following question, find out the alternative which will replace the question mark.

M144Q : H49L :: Q256U : ?

  1. AOption (a)

    D9G

  2. BOption (b)

    E10H

  3. COption (c)

    D9H

  4. DOption (d)

    E11H

View answer & explanation

Correct answer

Answer: (c)C.

D9H

Why this answer is correct

12345678910111213
ABCDEFGHIJKLM
26252423222120191817161514
ZYXWVUTSRQPON

 

The logic followed here is:

In each set we can see that first letter + 4 = last letter

Like in M144Q → M + 4 = Q

Also, place value of M is 13 so (13 – 1)2 = 144.

In H49L → H + 4 = L

Also, place value of H is 8 so (8 – 1)2 = 49.

Similarly,

In the given options only in option D9H, the given logic is used.

D9H → D + 4 = H

Place value of D is 4 so (4 – 1)2 = 9.

So, D9H is the answer.