Q: How many handshakes have taken place after the ninth guest arrives?

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55 PeopleHandshakes10213346510615721828936104511551266

3.14159265358979323846264338327950288419716939937510...3 is the ninth number to the right of the decimal place.5 is the ninth number in the series if you count the initial 3.(The first 50 to the right of the decimal place is shown for context.)

1000*999/2 = 499500

Seven different people get together in a place. Each person should handshake only once with all others. Find the total number of handshakes? the first one handshake with 6 person, and second one handshake with remaining 5, and so on....6+5+4+3+2+1=21

2.8 multiplied by 10 to yhe ninth power is 2,800,000,000. To arrive at this answer you'd move the decimal point to the right nine times adding zeroes as place holders, not to be confused with adding nine zeroes.

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45

55 PeopleHandshakes10213346510615721828936104511551266

Battery Place - IRT Ninth Avenue Line - ended in 1940.

3.14159265358979323846264338327950288419716939937510...3 is the ninth number to the right of the decimal place.5 is the ninth number in the series if you count the initial 3.(The first 50 to the right of the decimal place is shown for context.)

11*10/2 = 55

billionths

1000*999/2 = 499500

Heather Locklear is going to guest star.

You can say "el noveno lugar".

Do not try to play in ninth position on the violin. You would place your finger virtually where you are bowing, and you won't get any sound whatsoever.

Place the AED pads on the chest.

Place the AED pads on the chest.