trunefan4379 trunefan4379

03-09-2017
Mathematics

contestada

If 23 people shake each others hands once how many hands are shook in all

Respuesta :

Аноним Аноним

03-09-2017

This is the number of combinations of 2 from 23
23C2 = 23! / 2! 21!

A quick way to do this is 23*22 / 2 = 253

Answer Link

Otras preguntas

how to solve without using derivative...just analytically.lim h→0 (tan(pie/6) +h) – tan(7) h) / (h)

what is Factory Part or Worker of Cell membrane

this answer is also help you

find the distance between the following: (-3,7) and (3,-8)

What institutions exist in our government that protects our democracy, the individual rights and freedoms of the people, and/or the balance of power in our gove

which is an example of a secondary consumer A. owls eating snakes that ate mice B. mushrooms breaking down dead organismsC. snails eating plantsD. snakes eating

differentiation from first principles. please help! question is attached :)

In what document are the two concepts of Separation of Power and Checks and balance "embedded" or found in? (NOTE: The answer is NOT Federalist Papers 51)

Most mammals have diploid body cells and haploid gametes. During __________, chromosomes from haploid gametes combine, and a __________ zygote is formed. A. i

Can someone please help me