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Questions (8)
Fortune tellers use crystal balls to see the future. A fortune teller has a crystal ball with an index of refraction of 1.5 and
0 answers
895 views
Fortune tellers use crystal balls to see the future. A fortune teller has a crystal ball with an index of refraction of 1.5 and
0 answers
418 views
The galaxies in the universe are all flying away from each other. The speeds of nearby galaxies are proportional to the distance
0 answers
540 views
Let S be the set of {(1,0),(0,1),(1,1),(1,−1),(−1,1)}-lattice path which begin at (1,1), do not use the same vertex twice,
0 answers
489 views
x and y are positive real numbers that satisfy logxy+logyx=174 and xy=2883√. If x+y=a+bc√, where a, b and c are positive
1 answer
547 views
The number 2+3√+5√−−−−−−−−−−√ is algebraic because it is a root of a monic polynomial of degree 8,
1 answer
461 views
The sequence {ak}112,k=1 satisfies a1=1 and an=1337+n/an−1, for all positive integers n. Let
S=⌊a10a13+a11a14+a12a15+⋯+a109
2 answers
494 views
Find the number of ordered pairs of distinct positive primes p, q (p≠q) such that p^2+7pq+q^2 is the square of an integer.
0 answers
493 views
Answers (2)
234
wrong answer..
