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
9, 10, 12, 18, 42, 160
Find the wrong number in the given number series.
976, 720, 495, 297, 130, - 14Â
Find the wrong number in given number series.
3910, 3879, 3786, 3631, 3414, 3235.
- Find the wrong number in the given number series.
10, 21, 14, 25, 18, 30 131, 212, 261, 286, 295, 299
Find the wrong number in the given number series.
2, 4, 12, 48, 120, 1440
Direction: Find the wrong number in given number series.
1977, 1945, 1837, 1575, 1081, 217.
66, 220, 384, 543, 702, 861
Find the wrong number in the series.
5, 12, 23, 38, 57, 80, 10753, 57, 66, 82, 117, 143, 192