Q1: In a software project, 10 errors were introduced in the Software Requirements Specification document. All of those errors were amplified by a factor of 1:2 during the design phase where an additional 20 design errors were also introduced. All the errors from the design phase gets amplified 1:1.5 into code where an additional 30 errors were introduced. If no requirements and design reviews are conducted, unit testing finds 30% of all errors, integration-testing finds 30% of the remaining errors, and validation tests find 50% of the remaining errors, then how many errors will be released to the field?

Q2: In the above scenario, project manager decided to introduce requirements, design, and code reviews with 60% effectiveness in uncovering errors. How many errors will be released to the field?

Q3: Consider the scenarios in Q1 and Q2. If each of the errors released to the field costs $4800 to find and correct, and each error found in review costs $240 to find and correct, then how much money is saved by conducting reviews?