Previous Year Questions of For SSC CGL 2017

SSC Topic: Average with Solutions Q1. The average of seven numbers is 18. If one of the number is 17 and if it is replaced by 31, then the average becomes: (a) 21.5 (b) 19.5 (c) 20 (d) 21 Q2. The mean of 100 items was 46. Later on it was discovered that an item 16 was misread as 61 and …

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