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JEE Mains 8-Apr-2023 Shift 2 Solved Paper

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Question : 20

Total: 90

Let the mean and variance of 12 observations be ‌

and 4 respectively. Later on, it was observed that two observations were considered as 9 and 10 instead of 7 and 14 respectively. If the correct variance is ‌

, where m and n are coprime, then m+n is equal to

[8-Apr-2023 shift 2]

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