CallCejul9indleyblu CallCejul9indleyblu

02-09-2016
Mathematics

contestada

How many different arrangements of the letters in the word SCHOOL are there? .

Respuesta :

SyntaxError SyntaxError

02-09-2016

Its a permutation with repetition sum.

The formula is : n! / (a! * b!)
where a = no. of Os = 2
b = no. of Ds = 2
n = total no. of letters in the word doodle = 6

Working: 6! / (2! * 2!)
= 6 x 5 x 4 x 3 x 2 x 1 / 2 x 1 x 2 x 1
= 180 Answer

Answer Link

Otras preguntas

How to simplify -6+3x divided by x^2-6x+8

What symbol replaces the and < ,>,= 9/1 and 8/10

PLEASE HELP!! in the late 1800s, subsidies were given A. by the government to cattle ranchers in the west to encourage them to produce more cattle. B. by large

Which equation is in slope-intercept form and represents a line with slope 3 through the point (9,-4)

One should always learn from _____ past mistakes and avoid them in the future.

The bag contained only red marbles and white marbles. If the ratio of red marbles to white marbles was 5 to 4, what fraction of the marbles were white?

The Carter family now? just bought 3 crates of eggs, and each crate had 18 eggs. The family already had 7 eggs in their refrigerator. How many eggs do they have

Which transitional word or phrase would be best to use to show contrast between two ideas? A) eventually B) although C) similarly D) therefore

What is the leading coefficient of this polynomial -2a^3b^2+5ab^5+7b^4+8

necesito una opinión sobre la ilustración del siglo 18