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Question

Select the option in which the numbers are related in the same way as are the numbers of the following set.

(3, 6, 63)

The correct answer is

(4, 5, 89)

Number Analogy: Analyzing the Set (3, 6, 63)

The question asks us to find an option set where the numbers are related in the same way as in the given set (3, 6, 63). This is a classic number analogy problem where we need to identify the underlying mathematical relationship between the numbers in the initial set.

Finding the Relationship in (3, 6, 63)

Let's denote the three numbers in the set as A, B, and C. In the given set (3, 6, 63), we have A=3, B=6, and C=63. We need to find an operation or a combination of operations using A and B that results in C.

Let's explore a few possibilities:

  • Simple arithmetic operations: $A+B = 3+6 = 9 \neq 63$, $A \times B = 3 \times 6 = 18 \neq 63$.
  • Using powers of A and B:
  • $A^2 = 3^2 = 9$, $B^2 = 6^2 = 36$. $A^2 + B^2 = 9 + 36 = 45 \neq 63$.
  • $A^3 = 3^3 = 27$, $B^3 = 6^3 = 216$. $A^3 + B^3 = 27 + 216 = 243 \neq 63$.
  • Let's try combining powers of A and B:
  • $A^2 + B^3 = 3^2 + 6^3 = 9 + 216 = 225 \neq 63$.
  • $A^3 + B^2 = 3^3 + 6^2 = 27 + 36 = 63$. This matches the third number C in the set (3, 6, 63)!

So, the relationship seems to be: The third number (C) is the sum of the cube of the first number (A) and the square of the second number (B). Mathematically, this can be written as $A^3 + B^2 = C$.

Applying the Relationship to the Options

Now, let's check each option to see which one follows the same relationship $A^3 + B^2 = C$. We will take the first number as A, the second as B, and the third as C for each option.

Option 1: (8, 5, 64)

Here, A=8, B=5, C=64.

Let's calculate $A^3 + B^2$:

\(8^3 + 5^2 = (8 \times 8 \times 8) + (5 \times 5) = 512 + 25 = 537\)

Since 537 is not equal to 64, this option does not follow the pattern.

Option 2: (4, 5, 89)

Here, A=4, B=5, C=89.

Let's calculate $A^3 + B^2$:

\(4^3 + 5^2 = (4 \times 4 \times 4) + (5 \times 5) = 64 + 25 = 89\)

Since 89 is equal to 89, this option follows the pattern $A^3 + B^2 = C$.

Option 3: (5, 6, 92)

Here, A=5, B=6, C=92.

Let's calculate $A^3 + B^2$:

\(5^3 + 6^2 = (5 \times 5 \times 5) + (6 \times 6) = 125 + 36 = 161\)

Since 161 is not equal to 92, this option does not follow the pattern.

Option 4: (7, 3, 58)

Here, A=7, B=3, C=58.

Let's calculate $A^3 + B^2$:

\(7^3 + 3^2 = (7 \times 7 \times 7) + (3 \times 3) = 343 + 9 = 352\)

Since 352 is not equal to 58, this option does not follow the pattern.

Conclusion

Based on our analysis, only the set (4, 5, 89) follows the same relationship ($A^3 + B^2 = C$) as the original set (3, 6, 63).

Set A B C $A^3$ $B^2$ $A^3 + B^2$ Matches C? Follows Pattern?
(3, 6, 63) 3 6 63 27 36 27 + 36 = 63 Yes Base Set Pattern
(8, 5, 64) 8 5 64 512 25 512 + 25 = 537 No Does Not Follow
(4, 5, 89) 4 5 89 64 25 64 + 25 = 89 Yes Follows Pattern
(5, 6, 92) 5 6 92 125 36 125 + 36 = 161 No Does Not Follow
(7, 3, 58) 7 3 58 343 9 343 + 9 = 352 No Does Not Follow

Revision Table: Number Analogy Patterns

Understanding common patterns can help solve number analogy questions quickly. Here's a quick look at types of relationships:

  • Arithmetic operations (addition, subtraction, multiplication, division).
  • Powers and roots (squares, cubes, square roots, cube roots).
  • Combinations of operations (e.g., $A^2 + B$, $A \times B + C$, $A^3 - B$).
  • Digit-based operations (sum of digits, product of digits, etc.).
  • Prime numbers, composite numbers.
  • Sequences (arithmetic progression, geometric progression).

Additional Information: Solving Number Analogy Problems

To effectively solve number analogy problems like the one with the set (3, 6, 63), consider these steps:

  1. Analyze the Given Set: Look closely at the numbers in the original set. Are they increasing or decreasing? Are there any obvious squares or cubes?
  2. Brainstorm Potential Relationships: Think of various mathematical operations (addition, subtraction, multiplication, division), powers (squares, cubes), roots, or combinations. Consider how the first two numbers might relate to the third.
  3. Test Hypotheses: Apply the potential relationship you identified to the original set to see if it holds true.
  4. Apply to Options: Once you find a relationship that works for the original set, test it on each of the given options.
  5. Verify: The option that consistently follows the same relationship is the correct answer. If multiple options seem to fit, re-examine the original set for a more specific or complex pattern.

Practice with different types of number analogy sets helps improve your pattern recognition skills.

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Important Questions from Letter and Number Based

  1. Select the option in which the numbers are related in the same way as are the numbers of the following set.

    (4, 8, 16)

  2. Select the option that is related to the third number in the same way as the second number is related to the first number.

    23 : 441 : : 28 : ?

  3. Select the option that is related to the third number in the same way as the second number is related to the first number and the sixth number is related to the fifth number.

    12 : 72 ∷ 18 : ? ∷22 : 242
  4. Select the option that is related to the third number in the same way as the second number is related to the first number.

    7 : 56 :: 11 : ?

  5. Select the option in which the numbers are related in the same way as are the numbers of the following set.

    (12, 60, 84)

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