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Question

Direction: In the following questions, the symbols @, ?, ×, β and Ω are used with the following meaning as illustrated below:

‘X ? Y’ means ‘X is neither greater than nor equal to Y’.

‘X × Y’ means ‘X is neither smaller than nor greater than Y’.

‘X β Y’ means ‘X is not greater than Y’.

‘X Ω Y’ means ‘X is greater than Y’.

‘X @ Y’ means ‘X is either greater than or equal to Y’.

Now in each of the following questions assuming the given statements to be true, find which of the conclusion/s given below them is/are definitely true?

Statement:

D ? M β P × K Ω F ? T; M × G

Conclusions:

I. K @ G

II. T ? P

III. F β M

The correct answer is

Only conclusion I is true

Decoding Symbolic Inequalities

The first step in solving this type of problem is to understand the meaning of each symbol used in the statements. The symbols represent relationships between variables that are essentially mathematical inequalities.

Symbol Meaning Given Inequality Translation
? neither greater than nor equal to < (less than)
× neither smaller than nor greater than = (equal to)
β not greater than ≤ (less than or equal to)
Ω greater than > (greater than)
@ either greater than or equal to ≥ (greater than or equal to)

Translating Statements into Inequalities

We are given two statements:

  1. D ? M β P × K Ω F ? T
  2. M × G

Let's translate these statements using the inequality meanings we decoded:

  1. D < M ≤ P = K > F < T
  2. M = G

Now, we can combine these two statements by substituting M with G from the second statement into the first statement:

D < G ≤ P = K > F < T

This combined inequality chain represents the relationships between the variables.

Evaluating Conclusions based on Inequalities

We need to determine which of the given conclusions are definitely true based on the combined statement D < G ≤ P = K > F < T.

Let's look at each conclusion:

  1. I. K @ G
  2. II. T ? P
  3. III. F β M

Conclusion I: K @ G

This conclusion translates to K ≥ G.

From the combined statement, we have the segment: G ≤ P = K.

This chain directly shows that G is less than or equal to P, and P is equal to K. Therefore, G must be less than or equal to K (G ≤ K). This is equivalent to K ≥ G.

Thus, Conclusion I (K ≥ G) is definitely true.

Conclusion II: T ? P

This conclusion translates to T < P.

From the combined statement, we have the segment: P = K > F < T.

We need to find the relationship between T and P. We know P = K. So we are looking for the relationship between T and K. The segment is K > F < T. This shows a relationship between K and F (K > F) and between F and T (F < T).

However, there is no definite relationship between K and T established by K > F < T. For example, if K=10 and F=5, T could be 6 (where K > T) or T could be 12 (where K < T).

Since we cannot establish a definite 'less than' relationship between T and P (or K), Conclusion II (T < P) is not definitely true.

Conclusion III: F β M

This conclusion translates to F ≤ M.

From the combined statement, we have: D < G ≤ P = K > F < T. We also know M = G.

Substituting M back, the relevant part is: M ≤ P = K > F.

We need to find the relationship between F and M. We know M ≤ K and K > F. From M ≤ K > F, we cannot establish a definite relationship between M and F. For example, if M=5 and K=10, F could be 8 (where M < F) or F could be 3 (where M > F).

Since we cannot establish a definite 'less than or equal to' relationship between F and M, Conclusion III (F ≤ M) is not definitely true.

Summary of Conclusions

  • Conclusion I (K @ G or K ≥ G): Definitely true.
  • Conclusion II (T ? P or T < P): Not definitely true.
  • Conclusion III (F β M or F ≤ M): Not definitely true.

Based on the analysis, only Conclusion I is definitely true.

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Important Questions from Coded Inequalities

  1. In the following questions, the symbols $, #, @, % and * illustrate the following meanings.

    • P $ Q - P is not smaller than Q
    • P # Q - P is neither greater than nor equal to Q.
    • P @ Q - P is neither smaller than nor equal to Q.
    • P % Q - P not greater than Q
    • P * Q - P is neither greater than nor smaller than Q

    Statements:

    K # L, L % M, M * N, N # O

    Conclusions:

    I. K # M

    II. K * M

    III. L % O

  2. Statement:

    T @ I × H Ω U ? P β V ? L; H @ L

    Conclusions:

    I. T Ω L

    II. V β T

    III. I @ L
  3. Statements:

    P # B $ T; R & B $ S; L % R # Q

    Conclusions:

    I. P # Q

    II. L & Q

    III. T % S

    IV. P # S

  4. Statement:

    R $ W % P; N & W # S; J % T @ N; K & T

    Conclusions:

    I. N # J

    II. P # S

    III. R @ P

    IV. W $ K

  5. Statement:

    R % X @ W; Y # Z # S; X & Z; W $ U & Y

    Conclusions:

    I. U $ X

    II. W # Y

    III. S @ R

    IV. W % Z

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