Tuesday, June 8, 2010

Math Quiz (2)


If there are FIVE people in a room and each shakes hand exactly once with everyone else in the room, how many handshakes will there be?
(Hint: Act it out or draw a diagram to help you.)

15 comments:

  1. Name the five people 1,2,3,4,5.
    No.1 shakes hands with 2,3,4,5=4 times
    No. 2 shakes hands with 3,4,5=3 times
    No.3 shakes hands with 4,5=2 times
    No. 4 shakes hands with 5=1 time
    No. 5 has shook hands with everyone.
    Total number of handshakes= 4+3+2+1= 10
    Ans: 10 handshakes

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  2. A,B,C,D,E are the five people in a room.
    Each person shakes hands with 4 people.
    Therefore, 5x4=20 because there are 5 people and each person shakes hand with the other 4 people.
    Ans:20 handshales

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  3. The five people in the room are A,B,C,D,E.Each
    person shakes hands with 4 people.So,5x4=20
    because there are 5 people and each person shakes hand with the other 4 people.

    Ans:20 handshakes

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  4. A,B,C,D,E are the five people in a room .
    A shakes hands with B,C,D,E.
    B shakes hands with C,D,E.
    C shakes hands with D,E.
    D shakes hands with E.
    So 4+3+2+1=10
    Ans:10

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  5. The first person shakes hands with 4 people.
    The second person shakes hands with 3 people.
    The third person shakes hands with 2 people.
    The fourth person shakes hands with 1 person.
    The fifth person has shook hands with everyone.
    Than add 4,3,2 and 1 together to get 10.

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  6. Each person will shake hands 4 times. So if there are 5 people,
    5 X 4 = 20 Ans: 20 Handshakes

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  7. Firstly,we need to name these five people A,B,C,D and E.So A shakes hands with B,C,D and E which means 4 handshakes.B shakes hands with C,D and E which means 3 handshakes.C shakes hands with D and E which means 2 handshakes.D shakes hands with E which means 1 handshake.E has shook hands with everyone.So we count the total handshakes which is 4+3+2+1=10.So my answer is 10 handshakes.

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  8. The answer is ten handshakes!(:

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  9. Answer:10 HANDSHAKES

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  10. the five people are named a,b,c,d,e.A shook hands with b ,c, d, e , B shook hands with c, d, e, C shook hands with d, e and d shook hands with e. In total, there will be 10 handshakes.

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