Seven observations with mean 8 and variance 16, five of them 2, 4, 10, 12, 14: find the remaining two

The same question, asked 3 times: 4 May 2023 S2*, 10 May 2023 S2*, 16 May 2023 S2. Every wording below, oldest first.

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Question 1
4 May 2023 S2
143 $The mean and variance of seven observations are 8 and 16 respectively. If 5 of the observations are 2, 4, 10, 12, 14, then the square root of product of remaining two observations is$
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Question 2
10 May 2023 S2
132 $The mean and variance of 7 observations are 8 and 16 respectively. If first five observations are 2, 4, 10, 12, 14, then absolute difference of remaining two observations is$
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Question 3
16 May 2023 S2
118 $The mean and variance of seven observations are 8 and 16 respectively. If five of the observations are 2, 4, 10, 12, 14, then the product of remaining two observations is$
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Question 1