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Let the third number be x. According to the question, First number = (150/100) × x Second number = (130/100) × x Required ratio = [(150/100) × x] : [(130/100) × x] = 15:13
25 13.5 12.5 20.75 39.5 ? 302.25
...362 284 393 451 144 221
...100, 110, ?, 171.6, 240.24, 360.36
31 48 67 90 ? 150
8 24 12 ? 18 54
D irection: Which of the following will replace ‘?’ in the following series.
543,’?’, 564 ,588, 660
...112 ? 336 840 2520 8820
...3601 3602 1803 604 154 36
...18, 32, 50, 82, 132, ?
9, 21, 67, 273, 1371, ?
