Every body in a room shakes with ev...

Every body in a room shakes with every body clse . The total number of hand shakes is 66 . The number of person in the room is

Text Solution

Verified by Experts

The correct Answer is:

Topper's Solved these Questions

PERMUTATIONS & COMBINATIONS
DIPTI PUBLICATION ( AP EAMET)|Exercise EXERCISE 2 ( SPECIAL TYPE QUESTIONS ) SET -1|9 Videos
PERMUTATIONS & COMBINATIONS
DIPTI PUBLICATION ( AP EAMET)|Exercise EXERCISE 2 ( SPECIAL TYPE QUESTIONS ) SET -2|5 Videos
PERMUTATIONS & COMBINATIONS
DIPTI PUBLICATION ( AP EAMET)|Exercise EXERCISE 1A (PERMUTATIONS )|199 Videos
PARTIAL FRACTIONS
DIPTI PUBLICATION ( AP EAMET)|Exercise EXERCISE 2 SET - 4|2 Videos
PROBABILITY
DIPTI PUBLICATION ( AP EAMET)|Exercise EXERCISE 2 (SPECIAL TYPE QUESTIONS) SET-4|5 Videos

Similar Questions

Explore conceptually related problems

Every body in a room shakes hands with every body else. The total number of hand shakes is 66. The total number of persons in the room is

The number of floating ribs in the human body is

The total number of bones present in our body is

There are two examinations rooms A and B. If 10 students are sent from A to B, then the number of students in each room is the same. If 20 candidates are sent from B to A, then the number of students in A is double the number of students in B. The number of students in room A is:

On a new year day every student of a class sends a card to every other student. The postman delivers 600 cards. The number of students in the class are

The total number of body centred lattices possible among the 14 bravais lattices is

Ten persons with badges numbered 1 to 10 are in a room. If three of them are asked to leave the room. Then, the probability to have the person with the smallest badge number as 5 among the three persons that left the room, is

Every integer is a rational number. true or false?

In a class there are certain number of students. On the new year day every student posts a greeting card to all of his classmates. If the total number of greeting cards posted by them is 870. Then find the number of students.

In a college of 300 students, every student reads 5 newspapers and every newspaper is read by 60 students. The number of newspapers is

DIPTI PUBLICATION ( AP EAMET)-PERMUTATIONS & COMBINATIONS-EXERCISE 1B (COMBINATIONS )

A bag contains n white and n black balls . Pairs of balls are ...
Text Solution
|
The total number of ways of arranging the letters of the word IND...
Text Solution
|
Every body in a room shakes with every body clse . The total ...
Text Solution
|
On the occasion of Dipawali festival each student of a class s...
Text Solution
|
If 36 games were played at a chess tournament with each conte...
Text Solution
|
In chess championship 153 games have been played . If a player ...
Text Solution
|
Mr. A has c children by his first wife and Ms. B has x+1 chi...
Text Solution
|
There are 20 points in plane no three of which are collinear ....
Text Solution
|
There are 21 points in a plane no three of which are collinear...
Text Solution
|
How many stainght lines can be drawn by joning 10 points on a ...
Text Solution
|
There are n points in a plane no three of which are in the same...
Text Solution
|
There are n points in a plane no three of which are in the same...
Text Solution
|
The number of lines that can be formed from 12 points is a plan...
Text Solution
|
Out of thirty points in a plane , eight of them are collinear . T...
Text Solution
|
There are 12 points in a plane ,5 only of which are collinear . T...
Text Solution
|
The sides AB,BC,CA of a Delta ABC have 3,4and 5 interior poin...
Text Solution
|
The number of triangles formed by joining the vertices of a hexag...
Text Solution
|
IF T(n) dentoes the number of triangle formed with n points in ...
Text Solution
|
Let T(n) be the number of all possible triangles formed by joi...
Text Solution
|
Tm denotes the number of triangles that can be formed with the ...
Text Solution
|