With iodide, the solvate $\ce{NaI \cdot 3(CH3)2CO}$ can be formed, in which each $\ce{Na+}$ is coordinated by 6 acetone ligands via oxygen lone pairs, and the $\ce{I-}$ ions fill in the gaps between these octahedral units, being surrounded by the methyl groups of the acetones.
Randomization is a sampling method used in scientific experiments. It is commonly used in randomized controlled trials in experimental research.
Social Security Number Randomization Frequently Asked Questions. What is Social Security Number (SSN) Randomization? The project is a forward looking initiative of the Social Security Administration (SSA) to help protect the integrity of the SSN by establishing a new randomized assignment methodology. SSN Randomization will also extend the longevity of the nine-digit SSN nationwide.