There are "k" books & "I" copies of each in a college library. The number of ways in which a student can make a selection of one or more books is.......
Let T(n) denote the number of triangles which can be formed using the vertices of a regular polygon of n sides . If T(n+1) - T(n) = 21, then find the value of n.
A pipe can fill a tank in 10 minutes and 2nd one can fill the tank in 15 minutes, where as the 3rd one empties 7 liters in 1 minute. If the three work alltogether it takes 2 hours to empty the tank. Find the capacity of the tank.
If 2 (
Then
C (n,r) + 2 C( n, r-1) + C (n, r-2) = .......?
a:b:c=8:14:22
b:c:d=21:33:44,
a:b:c:d=????
(please try to explain with steps if possible)
The ratio of male tourists and female tourists was 1.5 : 0.333 in the month of January and 0.666 : 2 in the month of February. The number of male tourists in January was 40% more than the number of female tourists in February. Find the percentage difference between the number of female tourists in these two months.
find the sum of all the two digits positive integers which exceeds product of their digits by 12 ?
The number of Proper divisors of 1800, which are also divisible by 10 is....
Find the number of divisors of 16200 which are not divisible by 4.
Find the number of +ve integral solutions of abc=45
In how many ways can 22 distinct books be given to 5 students so that two students have 5 books each and another three students have 4 books each.
hi............guys !!😁
In a tennis tournament in which every pair has to play with every other pair, 10 players are playing. Find the number of games played
The number 3 can be written as 3, 2+1, 1+2, 1+1+1 in four ways.
In how many ways the number "n" can be written?
Seven people go to a cinema and park their cars outside, which are identical. While returning only three of them are able to unlock their cars ( assuming that a car can be unlocked only by its own key ). Find the total number of ways in which this can be done
In how many ways can 2n people be divided into n pairs?
find the last three digit of 48^802?
ans:304
the equation 3x+11y=k, where k is a 2-digit number, has exactly three solutions in which both x and y are positive integers. which of the following is not a value of x?
- 17
- 19
- 25
- 5
0 voters
ABC is a triangle. X is a point outside the triangle ABC such that CD=CX, where D is the point of intersection of BC and AXl and ang BAX=angXAC. Which one of the following is correct.
1]CA=CX
2] AXC AND ABD ARE SIMILAR
3]ABD>AXC
ďťżexplain a bit...