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Question 501

IB MTS 2025• Test

In a certain code language,

'A + B' means 'A is the daughter of B',

'A - B' means 'A is the brother of B',

'A × B' means 'A is the wife of B' and

'A ÷ B' means 'A is the father of B'.

How is C related to M if 'C + V - R × N ÷ M'?

  1. AOption (a)

    Father's brother's wife

  2. BOption (b)

    Mother's brother's wife

  3. COption (c)

    Mother's brother's daughter

  4. DOption (d)

    Father's brother's daughter

View answer & explanation

Correct answer

Answer: (c)C.

Mother's brother's daughter

Why this answer is correct

Preparing the family tree diagram by using the following symbols:

Hence, the correct answer is "Option 3"

Question 502

IB MTS 2025• Test

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:

Some plants are climbers.

All climbers are trees.

Conclusions:

(I) Some trees are plants.

(II) All plants are trees.

  1. AOption (a)

    Only conclusion (II) follows.

  2. BOption (b)

    Both conclusions (I) and (II) follow.

  3. COption (c)

    Neither conclusion (I) nor (II) follows.

  4. DOption (d)

    Only conclusion (I) follows.

View answer & explanation

Correct answer

Answer: (d)D.

Only conclusion (I) follows.

Why this answer is correct

The least possible Venn diagram is as follows:

Conclusions:

(I) Some trees are plants. - True (Some plants are climbers.All climbers are trees.Some trees are plants is True)

(II) All plants are trees - False (Some plants are climbers.All climbers are trees.All plants are trees is may be possible but not definite hence it is false)

Only conclusion (I) follows.

Hence, the correct answer is "Option 4"

Question 503

IB MTS 2025• Test

Each of P, Q, R, S, T, U and V has an exam on a different day of the week starting on Monday and ending on Sunday of the same week. Only two people have an exam before R. Only one person has an exam after S. Only three people have an exam between R and U. Only one person has an exam between P and V. Q has an exam immediately before P. Who has an exam on Monday?

  1. AOption (a)

    T

  2. BOption (b)

    V

  3. COption (c)

    U

  4. DOption (d)

    Q

View answer & explanation

Correct answer

Answer: (d)D.

Q

Why this answer is correct

Each of P, Q, R, S, T, U and V has an exam on a different day of the week starting on Monday and ending on Sunday of the same week.

  • Only two people have an exam before R.
  • Only one person has an exam after S.
  • Only three people have an exam between R and U.
  • Only one person has an exam between P and V.
  • Q has an exam immediately before P.

The Final Arrangement is,

MonQ
TueP
WedR
ThuV
FriT
SatS
SunU

 

Hence, the correct answer is "Option 4"

Question 504

IB MTS 2025• Test

What should come in place of the question mark (?) in the given series?

7 18 32 68 132 ?

  1. AOption (a)

    266

  2. BOption (b)

    265

  3. COption (c)

    268

  4. DOption (d)

    267

View answer & explanation

Correct answer

Answer: (c)C.

268

Why this answer is correct

The logic follows here,

Each term is multiplied by 2, and then +4 and −4 alternate.

  • 7 × 2 + 4 = 18
  • 8 × 2 − 4 = 32
  • 32 × 2 + 4 = 68
  • 68 × 2 − 4 = 132

Now apply the same rule to the next term:

  • 132 × 2 + 4 = 268

Hence, the correct answer is "Option 3"

Question 505

IB MTS 2025• Test

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:

All envelopes are kites.

Some kites are trains.

Conclusions:

(I) All trains are kites.

(II) Some envelopes are trains.

  1. AOption (a)

    Both conclusions (I) and (II) follow.

  2. BOption (b)

    Only conclusion (II) follows.

  3. COption (c)

    Only conclusion (I) follows.

  4. DOption (d)

    Neither conclusion (I) nor (II) follows.

View answer & explanation

Correct answer

Answer: (d)D.

Neither conclusion (I) nor (II) follows.

Why this answer is correct

The least possible Venn diagram is as follows:

Conclusions:

(I) All trains are kites. - False (Some Kites are Trains and Some Trains are Kites. Hence, it is false)

(II) Some envelopes are trains.- False (All Envelopes are Kites.Some Kites are Trains. Hence, it false)

Neither conclusion (I) nor (II) follows.

Hence, the correct answer is "Option 4"

Question 506

IB MTS 2025• Test

Seven people, W, X, Y, Z, E, F and G are sitting in a straight line, facing north. Only five people sit between G and E. Z sits to the immediate left of E. Only one person sits between Z and F. W sits at some place to the left of Y but at some place to the right of X.

Who sits third from the left end of the line?

  1. AOption (a)

    Y

  2. BOption (b)

    W

  3. COption (c)

    G

  4. DOption (d)

    X

View answer & explanation

Correct answer

Answer: (b)B.

W

Why this answer is correct

Seven people, W, X, Y, Z, E, F and G are sitting in a straight line, facing north.

  • Only five people sit between G and E.
  • Z sits to the immediate left of E.
  • Only one person sits between Z and F.
  • W sits at some place to the left of Y but at some place to the right of X

The Final Arrangement is , 

Hence, the correct answer is "Option 2"

Question 507

IB MTS 2025• Test

In a certain code language,

A = B means 'A is the sister of B',

A $ B means 'A is the brother of B',

A @ B means 'A is the wife of B',

and A * B means 'A is the father of B'.

How is A related to K if 'A = R @ F * B $ K'?

  1. AOption (a)

    Mother's sister

  2. BOption (b)

    Sister

  3. COption (c)

    Mother

  4. DOption (d)

    Mother's mother

View answer & explanation

Correct answer

Answer: (a)A.

Mother's sister

Why this answer is correct

Hence, the correct answer is "Option 1"

Question 508

IB MTS 2025• Test

In a certain code language, 'ONBE' is coded as '5781' and 'BANE' is coded as '1678'.

What is the code for 'A' in the given code language?

  1. AOption (a)

    7

  2. BOption (b)

    6

  3. COption (c)

    8

  4. DOption (d)

    1

View answer & explanation

Correct answer

Answer: (b)B.

6

Why this answer is correct

Given:  'ONBE' is coded as '5781' and 'BANE' is coded as '1678'.

O N B E  -  5 7 8 1

B A N E -    1 6 7 8

The Code for A is 6.

Hence, the correct answer is "Option 2"

Question 509

IB MTS 2025• Test

Based on the English alphabetical order, three of the following four letter-cluster pairs are alike in a certain way and thus form a group. Which letter-cluster pair DOES NOT belong to that group?

(Note: The odd one out is not based on the number of consonants/vowels or their position in the letter-cluster.)

  1. AOption (a)

    TE – XH

  2. BOption (b)

    VL - AP

  3. COption (c)

    LY - PB

  4. DOption (d)

    DS - HV

View answer & explanation

Correct answer

Answer: (b)B.

VL - AP

Why this answer is correct

The pattern followed here is:

Option 1. 

Option 2. 

Option 3. 

option 4. 

Odd one is 

'

Hence, the correct answer is "Option 2"

Question 510

IB MTS 2025• Test

Each of A, B, C, E, F, G and K has an exam on a different day of a week starting from Monday and ending on Sunday of the same week. C has the exam on Thursday. Only one person has the exam between E and C, where E has the exam before C. Only four people have exams between G and E. F has the exam on one of the days after E. A has exam on the day immediately before K. How many people have the exam between K and F?

  1. AOption (a)

    Four

  2. BOption (b)

    One

  3. COption (c)

    Three

  4. DOption (d)

    Two

View answer & explanation

Correct answer

Answer: (d)D.

Two

Why this answer is correct

Each of A, B, C, E, F, G and K has an exam on a different day of a week starting from Monday and ending on Sunday of the same week.

  • C has the exam on Thursday.
  • Only one person has the exam between E and C, where E has the exam before C.
  • Only four people have exams between G and E.
  • F has the exam on one of the days after E.
  • A has exam on the day immediately before K

The Final Arrangement is, 

MonB
TueE
WedF
ThuC
FriA
SatK
SunG

 

Hence, the correct answer is "Option 4"

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