New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    The second number in each of the number-pairs is

    obtained by performing certain mathematical operations on the first number. Three of the following four number-pairs follow the same pattern and thus form a group. Select the number- pair that does NOT belong to that group.
    A 18 : 321 Correct Answer Incorrect Answer
    B 21 : 438 Correct Answer Incorrect Answer
    C 17 : 286 Correct Answer Incorrect Answer
    D 19 : 357 Correct Answer Incorrect Answer

    Solution

    The logic is- 182 = 324 – 3 = 321 212 = 441 – 3 = 438 172 = 289 – 3 = 289 192 = 361 – 3 = 358

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