Question
The average age of three children is 21 years. If their
ages are in the ratio 3:5:6. Find the age of the youngest child.Solution
Total age of three children = 21 × 3 = 63 years Let their ages be 3x, 5x and 6x respectively. => 3x + 5x + 6x = 63 => 14x = 63 => x = 4.5 Therefore the age of youngest child = 3 × 4.5 = 13.5 years
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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