Question
A girl’s age is 125% of what it was 10 years ago, but
75% of what it will be after 10 years. What is her present age?Solution
Let the girl's present age be 'x' years. According to question, => 1.25 × (x-10) = 0.75 × (x+10) => 1.25x – 12.5 = 0.75x + 7.5 => 0.5x = 20 => x = 40 years
100, 164, 740, 3044, 9444, 20320
In each of the following questions, one number in the series does not follow the pattern of the others. Identify that wrong number in the series.
18, 27, 38, 56, 66, 83
Find the wrong number in the given number series.
1600, 800, 1200, 400, 100 , 12.5
In each of the following number series, one term is wrong. Find the WRONG term.
5, 10, 19, 33, 49, 70
The following numbers form a series. Find the odd one out.
24, 36, 54, 78, 121.5, 182.25
Find the wrong number in the given number series.
204, 215, 277, 337, 416, 518164, 304, 433, 551, 658, 752
9256Â Â 6844Â Â Â 4888Â Â 3350Â Â 2152Â Â 1276
273, 204, 138, 84, 39, 3
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