12 members were present at a board meeting. Each member
shook hands with all of the other members before & after the
meeting.
How many hand shakes were there?
Answers were Sorted based on User's Feedback
Answer / guest
132
Think of it this way: the first person shakes hands with 11
people, the second person also shakes hands with 11 people,
but you only count 10, because the hand shake with the first
person was already counted. Then add 9 for the third person,
8 for the fourth, & so on.
66 hand shakes took place before & 66 after the meeting, for
a total of 132.
Is This Answer Correct ? | 148 Yes | 12 No |
Answer / ajay maurya
For n nuimber of persons shaking hands with each other,
total no of handshakes are n(n-1)/2.
Hence for 12 people itis 12(12-1)/2= 66
Thus total handshakes = 2*66=132
Is This Answer Correct ? | 93 Yes | 4 No |
Answer / raj
For n nuimber of persons shaking hands with each other,
total no of handshakes are n(n-1)/2.
Hence for 12 people itis 12(12-1)/2= 66
Thus total handshakes = 2*66=132
Is This Answer Correct ? | 45 Yes | 2 No |
Answer / saurabh sukhija
For n nuimber of persons shaking hands with each other,
total no of handshakes are n(n-1)
Thus total handshakes =12(12-1)=132
Is This Answer Correct ? | 17 Yes | 5 No |
Answer / tharvesh
132 bcoz the total count is 12
Ans:n(n-1)
12(12-1)
12*11
132 is the Ans
Is This Answer Correct ? | 1 Yes | 1 No |
Answer / rahul
At first time handshake will be 11 and decrease this to 1 that the formula of sum of this sereis is=n(n+1)/2.
that n=11 put in formula
(11*(11+1)/2)=66
66+66=132 bcoz handshake will be two times
Is This Answer Correct ? | 0 Yes | 2 No |
a pipe fill a tank in 3hrs.another pipe fill that same tank in 2hrs.if both pipe inserted in tank to fill it how timw it will take to fill?
14 Answers Infosys, Zycus Infotech,
It comes once in a year and twice in a week what is that?
20 Answers AJ Square Inc, HCL, Infosys,
A positive integer that, when added to 1000 gives a sum which is greater than when multiplied by 1000. Find the positive integer.
A 3 digit number is such that it's unit digit is equal to the product of the other two digits which are prime. Also, the difference between it's reverse and itself is 396. What is the sum of the three digits?
16*2/7-8*4/3+17*3/7
19 Answers State Bank Of India SBI, TCS,
Given an N × N array of positive and negative integers, find the sub-rectangle with the largest sum. The sum of a rectangle is the sum of all the elements in that rectangle. In this problem the sub-rectangle with the largest sum is referred to as the maximal sub-rectangle. A sub-rectangle is any contiguous sub-array of size 1 × 1 or greater located within the whole array. Input Format: First line contains the size of matrix. Followed by n lines and each line contain n integers separated by space. Output format: Single integer which represents maximum sum of rectangle. Sample Input: 4 0 -2 -7 0 9 2 -6 2 -4 1 -4 1 -1 8 0 -2 Sample Output: 15
One sales man sold one box out of them and then he says, "I have the same number of red balls left out as that of blue." Which box is the one he solds out?
3 boys go to the restaurant. Their bill was 75 rs.. So they contributed 25 each. Manager then gives 5 rs back to the waiter and then waiter gave 3 rs back to them and put 2 rs into his pocket.. So their actual contribution is 24 because they got 1-1 rs back. so 24*3=72 and 2 rs into the waiter's pocket. so 74+2=74 where is 1 rs?
55 Answers College School Exams Tests, Garrison, Google, HCL, Jabong, Merlion, Rainbow Civil Engineers, Renault, TATA, Watair, Wipro,
You have 9 marbles. 8 marbles weigh 1 ounce each, & one marble weighs 1.5 ounces. You are unable to determine which is the heavier marble by looking at them. You have a weighing scale that consists of 2 pans, but the scale is only good for 2 total weighings. How can you determine which marble is the heaviest one using the scale & in 2 weighings?
if 12+22=24 23+8=6 32+13=40 73+16=144 then 36+2=? explain
13 Answers Hawkins, Infosys, L&T, Reliance, TCS, Total, Wipro,
There are 3 societies A, B, C. A lent cars to B and C as many as they had already. After some time B gave as many tractors to A and C as many as they have. After sometime c did the same thing. At the end of this transaction each one of them had 24. Find the cars each orginally had.
What is the ten letter city 7 8 9 is a famous festival 3 4 5 is a degree 2 1 is a abbreviation of group of countries 7 6 gives the meaning?