If a fair die is rolled twice and two numbers. X1=result of the first roll and X2=result of the second roll are obtained. Given that X1+X2=7,what is the probability that X1=4 or X2=4​

Match the following reasons with the statements given to create the proof. 1. do = ob, ao = oc sas 2. doc = aob given 3. triangle cod congruent to triangle aob vertical angles are equal. 4. 1 = 2, ab = dc if two sides = and ||, then a parallelogram. 5. ab||dc if alternate interior angles =, then lines parallel. 6. abcd is a parallelogram cpcte