Hello everyone lets learn Groups and Conditionality part 1 so what is groups and conditionality we learned matrix arrangements correct so groups and conditionality is nothing but standard version of matrix arrangement with some terms and condition apply let’s see first example There are 8 levers I, II III, IV, V, VI, VII, VIII to a safe in a bank, lever I is on whenever the main i.e. (the power supply) is on. None of the levers is on if the power supply is off. Lever II is on whenever the pin number is not input correctly. Lever III is on whenever the date of birth is not input correctly. Lever IV is on whenever both I and III are on. Lever V is on whenever either, but not both II and III is on. Which mean we can say that if lever IV is on lever V as to be off and vice versa. Lever VI is on whenever the mobile number is input incorrectly. Lever VII is on whenever any two or more of the parameters are not input correctly and lever VIII is on whenever all these parameters are input incorrectly. Let’s see this set and how to solve the questions now ideally in groups and conditionality we should solve one by one question rather than solving the entire set let’s see what is given to us in the set so the main as to be kept on ok now lever II will be on when the pin number is input incorrectly.