allyvilla allyvilla
  • 02-04-2021
  • Mathematics
contestada

there are 20 people in a room if they each shake eachothers hands once and only once. how many handshakes are there all together

Respuesta :

woahniya1234aniya woahniya1234aniya
  • 02-04-2021

Answer:

40

Step-by-step explanation:

Answer Link
livvyloo597 livvyloo597
  • 02-04-2021
19 they don’t shake their own hand I think
Answer Link

Otras preguntas

What does compris mean in French ???
a long distance telephone company charges a rate of 8 cents per minute or 90 cent mininum charge per call, whichever is greater. Find the cost in cents per minu
solve quadratic equation by factoring How do you do it 3k^2 + 72 = 33k
does gas have as definite or indefinite volume
If (x − 2)^2=49, then x could be ?
George has a small coin collection.  He has collected 16 gold coins, 28 silver coins, 32 copper coins, and4 bronze coins. At a flea market, George sells 15% of
a rectangular field with a area of 8000m2 is enclosed by 400m of fencing. determine dimensions to nearest tenth of a metre
what percent of 126 is 22?
What percent is 150 sq ft of 3000 sq ft
Hinge Joints-These jointscan only move in one direction, like a door hinge. One bone works against another. Movement is back and forth on one plane.Examples:___