Posts

Showing posts from November, 2019
Which types of data are best suited for finding arithmetic mean, median, and mode?
A set of five numbers has a mode of 12, a median of 11 and a mean of 10. What could the numbers be?
What is the meaning of X in a gamma variable with alpha=4 and beta=1?
Is a lower coefficient of variation better?
If 1:x = x:64, what one number can replace x?
What are blocking factors?
What is the complement of the following Boolean function, and how would you reduce to the minimum number of literals (BC'+A'D) (AB'+CD')?
How many dollars are 2.8 million pennies?
Is there a list of the most complicated formulas in mathematics?
What's the answer to 4+86-90+100÷78×0+661+5×0?
How can the equation 8 ÷ 2(2+2) = x have a correct answer of either 1 or 16, depending on which convention is used to solve the problem; is one of the conventions considered to be “wrong”?
Is flipping a coin really 50/50 or is it 49/51?
How do you graph linear inequalities in two variables?
What are the advantages and disadvantages of arithmetic mean in statistics?
What are the degrees of freedom for the test of slope for a regression line of 7 points made of 5 measurements each (Q)?
What is 40 divisible by?
What is A(b+c) =ab+AC?
Is there a way to turn 2*2^ (log(n/4) /2) into 2^ (log(n) /2)?
How do you prove the convergence of a beta function?
If set A = {d, {a}, c, e}, does it mean that element "a" is in set A?
If A+B = C, and A increases but B decreases by a larger amount, then what percentage of C's decrease is explained by A and B?
In probability, what's the difference between P (A and B) and P (A given B)?
The 3 letters are chosen at random from the letters P, A, N, S, O, L. What is the size of the sample space of this experiment?
A mathematician starts counting whole numbers from 0 to ∞ and stops at a random point. Of all numbers counted, one number is selected at random. What is the probability that the number so selected begins with 1. (e.g 193772940824)?
How do I solve the following optimization problem using the Karush–Kuhn–Tucker conditions: min z = x^2 + 8x + y^2 - 6y, while x and y are equal to or larger than zero?
How many terms are there in each of the arithmetic sequence -8, -6, -4, …38?
How can I make a C program that, given a float f and an integer n, prints float values with n digits of precision?
Can you use the laws of set theory to simplify A~(B-A)?
Since a+a+a+…+a= a*n and a*a*a*a*…*a=a^n, is there a short way to write a^a^a^a^…^a?
How do I prove that (a+b)=b or (a*b)=b are equivalent in Boolean algebra?
How can we simplify A'B+ABD+AB'CD'+BC using Boolean laws and De Morgan’s theorem?
What is the benefit of biased exponent over unbiased exponent?
Why are the degrees of freedom n-2?
Why are degrees of freedom n-1, and not just n?
How do I simplify (t-1/t) / (t+1/t)?
What is the cube root of 802?
Discribes the properties of arithmetic mean?
Formula = 2k+1 how do I find the total sum of the formula for k in range from 0 until 5?
How is (p∨q)∧(p∨r)⟹(q∨r) a tautology?
In Boolean algebra, if a +x = b + x, then how do you prove that a=b?
How do you write +, -, ×, ÷ in set builder form?
What is the value of n in n+2^ C2*n^C3= 210?
How many points is a B?
How can a byte be equal to 8 bits instead of 3 or 4 if the grouping is often done in 3 or 4 (octal, hexadecimal)? Wouldn't the definition of a byte reflect the grouping (28=256)?
How do I calculate lim tan²x / (3x² + 3sin²x) as x approaches 0?
What is the (n+1)th term of the series where the nth term is n-1/2n+1?
If f(n) is the sum of digits of n in base 10,what is f(f(f(44444444))) ?
How do you prove that an arithmetic and geometric series have the same terms and the same sum?
What is the next number in this sequence: 2, 4, 8, 16, __?