Step 2 To get a zero in row 2, column 1 we can add -5 times row 1 to row 2 and put the result in row 2. To get a zero in row 3, column 1 we can add -4 times row 1 to row 3 and put the result in row 3. 1 1 10 0 1 1 1 10 0 5 6 70 1 0 1 20 1 4 2 51 0 0 0 -2 1 1 0 Submit Skip (you cannot come back) Need Help? Read It Submit Answer

If there are 5 dishes, they can be relished in any order at a time. In permutation, it should be in a particular order. In combination, the order does not matter. Take 3 letters a, b, and c. The possible ways of pairing any two letters are ab, bc, ac, ba…

The fundamental counting principle is a rule that is used to count the total number of possible outcomes in a given situation.