Question
A is 3 years older than B while C is 4 years younger
than B. The ratio of age of A, 6 years hence and age of B, 4 years ago is 3:2. What was age of C, 10 years ago?Solution
Let the present age of B be x years. A’s present age = (x + 3) years C’s present age = (x - 4) years According to question, => [(x + 3) + 6]/(x -4) = 3/2 => x = 30 C’s age, 10 years ago = (30 - 4) – 10 = 16 years
612, 487,?, 396, 388, 387
Find the missing number in the given number series.
1, 2, 6, 24, 120, ?What will come in place of the question mark (?) in the following series?
36, 85, ?, 230, 330, 451
Find the missing term in the series:
2, 5, 11, 23, 47, ?
What will come in place of the question mark (?) in the following series?
400, 841, 1202, ?, 1716, 1885
44   45    41   50    ?      59    23
...221, 100, 0, -81, ?
...900 Â Â Â 90Â Â Â 18Â Â Â ? Â Â Â Â 2.16Â Â Â Â 1.08
16, 20, 11, 27, ?, 38
37, 57, 82, ?, 147, 187
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