Question
Sum of the present ages of A, B, C and D is 54 years.
After 4 years ratio of their ages is 5:4:3:2. What is C’s present age?Solution
At present sum of age = 54 years After 4 years sum of age will be, => 5x + 4x + 3x + 2x = 54 + 4 × 4 => 14x = 54 + 16 => x = 70/14 => x = 5 C’s present age = 3x – 4 = 11 years
Find the wrong number in the given number series.
29, 60, 123, 250, 515, 1016
123, 155, 198, 246, 301, 363Â
12, 10, 23, 65, 265, 1289Â
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120, 60, 30, 15, 7.5, 3.25, 1.875 Find the wrong number in the given number series.
1728, 121, 1000, 729, 512, 49
Find the wrong number in the given number series.
24, 120, 721, 5040, 40320, 362880
Find the wrong number in the given number series.
145, 114, 93, 74, 57, 44
- Find the wrong number in the given number series.
118, 150, 178, 206, 238, 266 210, 140, 105, 84, 70, 63, 52.5
7, 27, 10, 32, 17, 37