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If in each of the following groups of numbers, last two digits are interchanged and after that they are arranged in descending order, then what will be the first digit of the middle group? 257, 491, 623, 846, 738

asked 2019-06-25 05:57:02 -0500

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If in each of the following groups of numbers, last two digits are interchanged and after that they are arranged in descending order, then what will be the first digit of the middle group? 257, 491, 623, 846, 738.

Options: (A) 7 (B) 4 (C) 8 (D) 6

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answered 2019-06-26 01:03:18 -0500

step 1: last 2 digits are interchanged => 275, 419, 632, 864, 783

step 2: arrange in descending order => 864, 783, 632, 419, 275

Middle group => 632

First digit in middle group => 6

Answer : option D

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Asked: 2019-06-25 05:57:02 -0500

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Last updated: Jun 26