Question
The ratio of A and B present age is 5:2. The product of
their ages is 9000. What will be the ratio of their ages after 3 years?Solution
Let their present age be 5x and 2x respectively. Product of their ages = 10x² = 9000 => x² = 900 => x = 30 Present age of A = 5x = 150 years Present age of B = 2x = 60 years Ratio of their ages after 3 years = (150+3) : (60+3) = 153:63 = 17:7
What will come in place of the question mark (?) in the following series?
1528, 1416, 1204, ?, 480, -32
143 Â Â Â Â 119Â Â Â Â 107Â Â Â Â 101Â Â Â Â Â 98Â Â Â Â ?
96 89 ? 90 94 91
...What value should come in the place of (?) in the following number series?
19, 235, 260, 324, 333, ?
What will come in place of the question mark (?) in the following series?
305...
In each of the following number series, one term is missing. Find the missing term.
3, 5, 20, 24, 144, 150, ?
1029, 1030, 1039, 1064, ?, 1194
75, 80, 95, ?, 155, 200
What will come in place of the question mark (?) in the following series?
1515, 184, ?, 455, 967, 624
7 29 61 ? 211 349
...
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