How many different twotwo-letter passwords can be formed from the letters Upper A comma Upper B comma Upper C comma Upper D comma Upper E comma Upper F comma Upper G and Upper HA, B, C, D, E, F, G and H if no repetition of letters is allowed?

1. for which of the following are you not required to signal beforehand? a. changing lanes b. speeding up c. stopping

The idea that, for each pair of devices v and w, there’s a strict dichotomy between being “in range” or “out of range” is a simplified abstraction. more accurately, there’s a power decay function f (·) that specifies, for a pair of devices at distance δ, the signal strength f(δ) that they’ll be able to achieve on their wireless connection. (we’ll assume that f (δ) decreases with increasing δ.) we might want to build this into our notion of back-up sets as follows: among the k devices in the back-up set of v, there should be at least one that can be reached with very high signal strength, at least one other that can be reached with moderately high signal strength, and so forth. more concretely, we have values p1 ≥ p2 ≥ . . ≥ pk, so that if the back-up set for v consists of devices at distances d1≤d2≤≤dk,thenweshouldhavef(dj)≥pj foreachj. give an algorithm that determines whether it is possible to choose a back-up set for each device subject to this more detailed condition, still requiring that no device should appear in the back-up set of more than b other devices. again, the algorithm should output the back-up sets themselves, provided they can be found.\

Many prestigious universities have a system called a “legacy preference system” which is used to decide which applicants should be accepted to the university. if an applicant’s parent is an alumnus of the university, the applicant will be admitted with lower gpa and sat scores than if the parent is not an alumnus. (there is currently a lot of discussion about the fairness of this system, but universities get a lot of money from their alumni so they are unwilling to change ) your assignment for mp2 is to implement a computerized system like this for a very small prestigious university. the university has two schools, liberal arts and music, each with their own criteria for accepting students. your program must read in certain information about an applicant and print a message saying whether the applicant should be accepted or not.