Case study - what features would you use to determine credit risk given transaction history from the past two years. Explain a simple map reduce problem Read in a very large file of tab delimited numbers using python and count frequency of each number (don’t overthink this. Use python done in a few lines) Whats more likely: Getting at least one six in 6 rolls, at least two sixes in 12 rolls or at least 100 sixes in 600 rolls? Find all the combinations of change you can for a given amount