For any positive integer $n$, let $G(n)$ be the number of pairs of adjacent bits in the binary representation of $n$ which are different. For example, $G(10)=3$ because the bits of $1010_2$ change at all three places and $G(12)=1$ because the bits of $1100_2$ change only from the fours to the twos place. For how many positive integers $n<2^{10}$ is it true that $G(n)=2$?

Ihave been given the number of guns per 100, and the total firearm-related deaths per 100,000. i have to find the actual number of guns per country and actual number of gun-related deaths. if somebody could show me how to do 1 question, i can finish the rest, i am just confused. tia

What machine listens for http requests to come in to a website’s domain? a. a router b. a browser c. a server d. a uniform resource locator

Suppose there is a relation r(a, b, c) with a b+-tree index with search keys (a, b).1. what is the worst-case cost of finding records satisfying 10 < a < 50 using this index, in terms of the number of records n1, retrieved and the height h of the tree? 2. what is the worst-case cost of finding records satisfying 10 < a < 50 and 5 < b < 10 using this index, in terms of the number of records n2 that satisfy this selection, as well as n1 and h defined above? 3. under what conditions on n1 and n2, would the index be an efficient way of finding records satisfying the condition from part (2)?