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Question

Find the missing number: 256 : 4096 :: 225 : ?

This question was previously asked in
SSC CGL 2025 Tier 1 Question Paper (25-Sep-2025) (Shift 3)
The correct answer is
3375

To solve the analogy question 256 : 4096 :: 225 : ?, we need to identify the mathematical relationship between the pairs of numbers provided.

Let's start by analyzing each part of the analogy:

  1. The first pair is 256 : 4096: Here, 256 and 4096 have a specific relationship.

To find this relationship, observe that:

  • \(256 = 4^4\)
  • \(4096 = 4^6\)

Thus, it seems that the second number in the pair is the cube (or higher power) of the base taken for the first number.

  1. Now let's consider the second pair 225 : ?: We must find a number which holds a similar relationship with 225 as 4096 does with 256.

Given that:

  • \(225 = 15^2\)

Applying a similar process for the number 225:

  • Calculate the cube of 15:
  • \(15^3 = 3375\)

Thus, the missing number that completes the analogy is 3375.

Now, let us verify this by ruling out the other options:

  • 3125: This is \(5^5\), which does not seem relevant as 225 relates to 15.
  • 4225: This is \(65^2\), unrelated directly to 225.
  • 4096: Already used in pairing with 256, unsuitable here.

Therefore, the correct answer is 3375.

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    DF : GI :: KM : ?

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  3. Find the missing number:
    $100 : 1000 :: 64 : ?$
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Important Questions from Analogy

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

    12 : 60 :: 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.

    16 : 144 :: 28 : ?

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

    (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g. 13 - Operations on 13 such as adding / subtracting /multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed)

    (42, 18, 3)

    (36, 14, 4)

  4. Select the option that is related to the fifth letter-cluster in the same way as the second letter-cluster is related to the first letter-cluster and the fourth letter-cluster is related to the third letter-cluster.

    ABILITY : LIBAYTI : : CHRONIC : ORHCCIN : : HEAVILY : ?

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

    (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits.)

    (4, 50, 6)

    (13, 128, 3)

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