Two teams A and B play a football match in January. In the first half of 50 minutes, A scored the first and its only goal. What is the probability that the team B also scored in the first half given that the time lag between its and A's goal was 10 minutes ?
https://www.oliveboard.in/blog/wp-content/uploads/2015/07/image001.png.Find the sum of real root of the equation above?
options are -6 9 -13 -21?detailed solution is appreciated.
2)For every 9 leaps of a rabbit, a hound takes 4 leaps. In each leap the rabbit covers 1 meter while the hound covers 2+1/3 meters. In how many leaps would the hound catch the rabbit if the rabbit has a start of 16 meters.
there are 6 team in hockey championship. Each team has to play one match with each team ,two point for won and one for draw and zero for loose ,2 team will lead to 2nd round
what is min points require to guarantee to enter in the second round?
Previous thread question- OA was not given.
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The price of a TV set worth rs 20,000 is to paid in 20 instllments 0f rs 1000 each.If the rate of interest be 6% per annum and the first installment be paid at the time of purchase then the value of the last installment covering the interest as well will be?
What annual installment will discharge a debt of rs 4200 due in 5 years at 10% simple interest? a) 500 per year b)600 per year c)700 per year d)800 per year?????...explain?
Which are the best book to prepare for CAT math and GRE math?
7 diff objects must b divided among 3 ppl.in hw many ways cn this b done if atleast 1 of them gets exactly 1 object?
My solution:
1.Two of them getting exactly one object(1 obj+1obj+5obj):
7C2 X 3
2.One of them getting exactly 1 obj:
7C1 X 3 X(ways to distribute 6 obj among 2 ppl)
=>7C1 X 3 X(2^6- ways where any 1 out of those 2 gets 1 obj only)
=>7C1 X 3 X(2^6-2)
hence ans shud be 1365
But actual ans is 1218.
where did i go wrong?
In an xam,max marks fr each of the 3 papers is 50 each.The max marks fr the 4th paper is 100.find the no of ways wid which a stuent cn score 60% mark in aggregate.
My sol:
Total marks to b scored out of 250 is 150.
now
3X(50C0 X 50C0 X 50C50 X 100C100
+50C0 X 50C1 X 50C49 X 100C100
+.....................................................
+50C0 X 50C49 X 50C1 X 100C100
+ 50C0 X 50C50 X 50C0 X 100C100)
+ 3X(50C0 X 50C50 X 50C1 X 100C99
+50C0 X 50C50 X 50C2 X 100C98
+.......................................................
+50C0 X 50C50 X 50C50 X 100C50
+50C1 X 50C50 X 50C50 X 100C99
+......................................................
+50C50 X 50C50 X 50C50 X 100C0)
Is it the correct way?How to solve this(the second grp)?
24 men can complete a work in 16 days . 32 women can complete the same work in 24 days. 16 men and 16 women starting working and worked for 12 days.How many more men are to be added to complete the remaining work in 2 days?
a)48
b)24
c)36
d)16 ??
For which of the following values y4 - 10y3 + 5y2 + 100y + 100 = 0?
(root65 + 5)/2 (root65 - 5)/2 (root13 + 5)/2 (root13 - 5)/2
Plz help me.I dont knw how to solve these type of ques. Share your approach
please share the approach
http://i.imgur.com/qnjn0af.png
Three cities A,B and C are connected such that each city has at least one direct route to each of the other. If one wants to go from A to B, either a direct route (AB) or an indirect one (ACB) can be used. Totally, there are 33 routes from A to B and 23 routes from B to C. How many indirect routes are there from A to C?
A)15 B)18 C)12 D)20
in how many ways numbers of the gp {22,19,11,16,18,15} be arranged such that product of any two adjecent numbs are alwyz even??
What is the smallest natural, odd, composite no ?
Ten balls are selected from an unlimited supply of blue, yellow, green and white balls.
1)In how many ways can the ball be selected?
A)286 B)276 C)266 D)296
2)
If at least one of each kind has to be selected, then in how many ways can the selection be made?
A)84 B)96 C)82 D)80
Kindly help in the approach to solve such questions.
If p= 1!+2*2!+3*3!+4*4!+..+10*10!. Find the remainder when p+2 is divided by 11!.
(1) 10 (2) 0 (3) 7 (4) 3 (5) 1
can anyone plz share the approach?
Puys..do we have any method to find the number of ways of distributing n different ice creams into r different people such that each person gets alteast one icecream....???