(a)Count the number of length n permutations conisting
of a single cycle, when written in cycle notation. (Explain your
answer.)
(b)How many permutations of length 2n have a cycle of
length n + 1? (Explain your answer.)
What is a gamete? A zygote? How many chromosomes do
they have (n or 2n)? Are they haploid or diploid
cells?
Describe two different aspects of meiosis that
contribute to genetic variation between individuals.
1a. Proof by induction: For every positive integer
n,
1•3•5...(2n-1)=(2n)!/(2n•n!). Please explain what the exclamation
mark means. Thank you for your help!
1b. Proof by induction: For each integer n>=8,
there are nonnegative integers a and b such that n=3a+5b
consider “COLLEGEOFENGINEERING”
a) How many permutations are there total?
b) How many permutations start and end with vowels?
c) How many permutations do NOT have consecutive vowels in
them?
d) How many permutations contain the vowels in order (all Es
before All Is before all Os)?
e) How many permutations contain the substring "GINGER"?
How many ±1-sequences of length n are there?For example, (1, −1,
−1, 1) is not a happy sequence, because although 1 ≥ 0 and 1 − 1 ≥
0,the sum 1−1−1 is negative, so the condition fails for k = 3.
How many arrangements of length n where 1 ≤ n ≤ 8 can be formed
from the letters A, A, B, C, C, C, D, E where
(a) both A’s are adjacent?
(b) the string starts or ends with A?
(c) you use (exactly) 4 letters from the list?
1. a. How many permutations are there of the letters
{A,B,C,D,E,F}? Of there, how many are even?
b. Express the permutation BAFEDC in P6 in cycle
notation and determine whether it is even or odd.
c. Determine the composition BAFEDC*BCAFDE in P6. Is
the composition even or odd?
d. What is the members of P6 whose cycle notation
(1345)(26)?