Interested to Buy Any Domain ? << Click Here >> for more details...
Out of 10 white, 9 black and 7 red balls, in how many ways
can we select one or more balls
please with solution.
- 8 Answers
- 22184 Views
- Wipro, I also Faced
- E-Mail Answers
Answer Posted / sudheer
we need to have one or more balls, so its like a position
where we should not be with no balls.
so answer is (total number of ways we can select the balls
in all possible ways) - (no. of ways where we don't have
any balls selected)
So, no. of ways where we don't have any balls selected =
10C0*9C0*7C0 = 1
total number of ways we can select the balls in all
possible ways = 10!*9!*7!/(10*9*7)
so, answer is ((10!*9!*7!)/(10*9*7)) - 1 =
| Is This Answer Correct ? | 9 Yes | 24 No |
Post New Answer View All Answers
one grandfather has three grandchildren, two of their age difference is 3, eldest child age is 3 times youngest child’s age and eldest child’s age is two times of sum of other two children. What is the age of eldest child?
A fly is there 1 feet below the ceiling right across a wall length is 30m at equal distance from both the ends. There is a spider 1 feet above floor right across the long wall eqidistant from both the ends. If the width of the room is 12m and 12m, what distance is to be travelled by the spider to catch the fly? if it takes the shortest path.
If A is travelling at 72 km per hour on a highway. B is travelling at a speed of 25 meters per second on a highway. What is the difference in their speeds in m/sec.
Find the hypotenuse of a right angle isoceles triangle whose area is 50.
If VXUPLVH is written as SURMISE, what is SHDVD?
2/3 of people read newspaper A,3/4 read newspaper B.if 38 read both and 8 didn't read any of the 2.how many read A?
The base 5 representation of the decimal number 2048 is _____.
two friends A,B are running up hill and then to get down! length if road is 440 yards A on his return journy met B goin up at 20 yards from top,A has finished the rase .5 Minuit earlier than B,then how much time A had taken to complete the rase.
There N stations on a railroad. After adding x stations 46 additional tickets have to be printed. Find N and X.
Fifty minutes ago if it was four times as many minutes past three o'clock, how many minutes is it to six o'clock?
in a question ,last part has, the ages of two people has the ratio of 6:6 and by adding the numbers we get 44, after how many years the ratio would be 8:7?
Dear Sir/ Madam, Kindly send me the model question answers for RRB-Technician Signal(Physics/Maths) to saranya67veena@gmail.com
how can i get previous ssc data entry question papers?... if u have any idea pls give me very kindly.....
When the angle a, b, c, d are given find ‘x’?
Find the result of the following _expression if, M denotes modulus operation, R denotes round-off, T denotes truncation: M(373,5)+R(3.4)+T(7.7)+R(5.8)
