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Number triad: one number = square of the sum or difference of the other two

This type of question, asked 3 times: 17 Jul 2023 S2, 19 Jul 2023 S1, 26 Jul 2023 S3. All 3 questions below, oldest first.

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  1. Question 1

    17 Jul 2023 S2

    21
    Select the set in which the numbers are related in the same way as are the numbers of the given 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) (4, 5, 83) (5, 5, 102)

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  2. Question 2

    19 Jul 2023 S1

    13
    Select the set in which the numbers are related in the same way as are the numbers of the given set. (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.) (13, 64, 5) (10, 1, 9)

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  3. Question 3

    26 Jul 2023 S3

    17
    Select the set in which the numbers are related in the same way as are the numbers of the given set. (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.) (4, 81, 5) (3, 144, 9)

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