Question
B is 3 years older than A and A is 5 years older than C.
If the sum of the age of A and C is 23 years, then find the sum of the ages of all three.Solution
Let C’s present age be x years. So, A’s present age = (x + 5) years And B’s present age = (x + 5 + 3) = (x + 8) years According to question, => x + 5 + x = 23 => 2x = 18 => x = 9 Required total sum = x + (x + 5) + (x + 8) = 3x + 13 = 40 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