These are all independent events being that answering one question does not effect the other questions. Each question can be either true or false....so the probability of getting 1 correct is 1/2.
the probability of getting them all correct is : 1/2 * 1/2 * 1/2 = 1/8 <=
The maturity value is the principal value together with interest due. .. mv = P +Prt .. = 5350*(1 +0.085*120/360) . . . . . . year is 360 days for "ordinary interest" .. ≈ 5501.58
