Riddle of the day!


If there are 20 people in a room and each of them exchange hand shakes, how many handshakes would be produced? Explain please

*First comment with wrong answer 200 Recharge. 1st correct answer N400. Sponsored by Nze Sam and Friends.

Comments

Anonymous said…
200
Unknown said…
400 handshakes
Anonymous said…
20 handshakes
Zubby d don said…
400 handshake
190 handshake first person shakes 19 persons second 18 etc.......so 19 +18+!7.......
08137065909 said…
380 hand shakes of course
Unknown said…
380 hand shakes wld b produced,nd datz coz each person wld get an hand shake by 19 pple,nd so since dia re 20 pple in d room,so its 19 multiplied by 20
BRO. PSALM said…
Bros 20men produces 20 hands; then multiply by the number of men in the room; which will give you:

20 ¤ 20 = 400hands

*NB: each man stretched-forth only one hand to check (..for we dont check with both of our hands)

..thanx
Unknown said…
400 hand shakes......dats 20*20=400
Unknown said…
400 hand shakes......dats 20*20=400
creamy chic said…
400 handshakes 08137727637
cyprianjideofor pol said…
400 handshakes
Dulocs said…
each of the 20 people shakes hands with 19 other people __ 20*19=380
BUT ... Sam shaking hands with Sue is the same as Sue shaking hands with Sam
__ so half of the handshakes are duplicates

(20*19)/2=190
creamy chic said…
400 hand shakes will b produced 08137727637
emenite[07068641616] said…
Keep things simple. Assume that there were 4 people instead of 20 - A, B, C, D
{(AB), (AC), (AD), (BC), (BD), (CD)}
6 possible combinations

C(4, 2) = 4×3/(1×2) = 6

With n people there would be C(n,2) handshakes. With 20 people, there would be C(20,2) handshakes.

C(20, 2) = 20×19/(1×2)
= 190
creamy chic said…
400handshakes 08137727637
BRO PSALM said…
*NB: Remember that each man would stretched-forth only one hand to check and not both (..for we responsibly check with one hand - our right hand precisely)

-----------------------

Now Bros.. first of all, remember that they are 20men. When the 1st check the other 19men, it produces 19 hands; and the 2nd Man check the remaining 18 it produces 18 hands.

*Now this is how the prograssion continued till the result came down to only 1 hand. ..Now ADD up the whole result (ie: 19 + 18 +17 + ...+2+1 = 190).
*So, that will give you 190 hands from the 20 men in the room.

= 190hands


(BRO. PSALM)
08067343164.
08126055045.

..thanx
BRO PSALM said…
*NB: Remember that each man would stretched-forth only one hand to check and not both (..for we responsibly check with one hand - our right hand precisely)

-----------------------

Now Bros.. first of all, remember that they are 20men. When the 1st check the other 19men, it produces 19 hands; and the 2nd Man check the remaining 18 it produces 18 hands.

*Now this is how the prograssion continued till the result came down to only 1 hand. ..Now ADD up the whole result (ie: 19 + 18 +17 + ...+2+1 = 190).
*So, that will give you 190 hands from the 20 men in the room.

= 190hands


(BRO. PSALM)
08067343164.
08126055045.

..thanx
BRO PSALM said…
*NB: Remember that each man would stretched-forth only one hand to check and not both (..for we responsibly check with one hand - our right hand precisely)

-----------------------

Now Bros.. first of all, remember that they are 20men. When the 1st check the other 19men, it produces 19 hands; and the 2nd Man check the remaining 18 it produces 18 hands.

*Now this is how the prograssion continued till the result came down to only 1 hand. ..Now ADD up the whole result (ie: 19 + 18 +17 + ...+2+1 = 190).
*So, that will give you 190 hands from the 20 men in the room.

= 190hands


(BRO. PSALM)
08067343164.
08126055045.

..thanx
BRO PSALM said…
*NB: Remember that each man would stretched-forth only one hand to check and not both (..for we responsibly check with one hand - our right hand precisely)

-----------------------

Now Bros.. first of all, remember that they are 20men. When the 1st check the other 19men, it produces 19 hands; and the 2nd Man check the remaining 18 it produces 18 hands.

*Now this is how the prograssion continued till the result came down to only 1 hand. ..Now ADD up the whole result (ie: 19 + 18 +17 + ...+2+1 = 190).
*So, that will give you 190 hands from the 20 men in the room.

= 190hands


(BRO. PSALM)
08067343164.
08126055045.

..thanx
BRO PSALM said…
*NB: Remember that each man would stretched-forth only one hand to check and not both (..for we responsibly check with one hand - our right hand precisely)

-----------------------

Now Bros.. first of all, remember that they are 20men. When the 1st check the other 19men, it produces 19 hands; and the 2nd Man check the remaining 18 it produces 18 hands.

*Now this is how the prograssion continued till the result came down to only 1 hand. ..Now ADD up the whole result (ie: 19 + 18 +17 + ...+2+1 = 190).
*So, that will give you 190 hands from the 20 men in the room.

= 190hands


(BRO. PSALM)
08067343164.
08126055045.

..thanx
somayina's blog said…
They are 20 people and every one of them shakes hand 19 times each...now the total handshake is 19 multiplied by 20 =380...this means that the total of handshakes is 380.They are 20 people and every one of them shakes hand 19 times each...now the total handshake is 19 multiplied by 20 =380...this means that the total of handshakes is 380.
Unique Vivi Masscom said…
190
Unique Vivi Masscom said…
190
Anonymous said…
400
Anonymous said…
490
Anonymous said…
10 hanshakes,my number 08062133205
Anonymous said…
380
chidimma Ezeadili 300level student of BKF said…
The answer is 400 handshakes.if one person shakes 20 persons handshakes produced is 20.den if 20 shakes 20,it Should be 20 X20 eqUalS to 400.
08137065909 said…
380.. Just saw the explanation part.. Ok, is 380 cos they are 20 and one person out of the 20 gonna shake 19 people... Same way everyone out of the 20 gonna shake 19people each until the 20thperson.. In simple mathematics u simply mutiple that 19 X 20 =380..
Hon a.b supreme said…
1o handshakez wil be produce.
Hon a.b supreme said…
Sowi,380 handshakez wil be produce.meaning 1 person to 19 handshakez.
Unknown said…
The answer should be 190
Anonymous said…
380 handshakes will be produced.. That is one person will shake 19 peoples making it 20 times 19 equals 380
cynthia soc said…
10 handshakes will be produced, 2pples handshake is one so 20 divided by 2 is 10.trying dunno
Gist Me Inc. said…
ANSWER: 20 persons shakes hand with 19 other persons...20 x 19= 380
(A shaking hands with B is the same as B shaking hands with A) so 380/2=190 Handshakes.

Congratulations Gredo.Please email gistmeansu@gmail.com
Miracle Chizaram is still on our agenda. Please we still have you in mind.
Unknown said…
the ansa is 400 cause u gon shake 19 ppl + u =20 hands..so u multiply by 20
Anonymous said…
each to shake 19 others
20 multiplied by 19 equal to 380 handshakes.
08038673652

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