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A ball rolls on the floor of a rectangular room of base 8 m x 5 m. It deflects after hitting the wall of the room. The ball starts rolling from one corner of the room and moves at an angle of 45o towards the opposite side of the room. Everytime after hitting, it gets deflected such that its line of travel is perpendicular to its previous path. Find, after how many minimum deflections, it will reach any corner of the room.
Enter your response (as an integer) using the virtual keyboard in the box provided below
[quizky-text]
1 .11
2 .13
3 .12
4 .14
ans : 11 approach please.
Three vessels A, B and C of capacity 120 litres each contain a mixture of alcohol and spirit. Vessel A contains 100 litres of the mixture with 65% alcohol. Vessel B has 70% alcohol and this vessel is half empty. The vessel C has 80 litres of mixture out of which 20 litres is spirit. Now, the mixture from vessel A is poured into vessel B until vessel B is completely filled. Then the mixture from vessel B is poured into vessel C until C is completely filled. Now the entire mixture from vessel C is poured into the vessels A and B. Find the ratio of alcohol in vessels A and B.
any short hand approach for such question please.
ans : 84/83
N people vote for one of 27 candidates. Each candidates percentage of the vote is at least 1 less than his number of votes. What is the smallest possible value of N?
- 127
- 137
- 134
- 128
0 voters
N! / (LCM of 1st n consecutive natural numbers) = (n+1)! / (LCM of 1st n+1 consecutive natural numbers) = k (k>1)
How many values of n are possible such that n =
Please explain .... @sagarcat
- 12
- 10
- 11
- 31
- 41
0 voters
Q.Consider ab, a two-digit number, and its square cde, a three-digit number. For how many values of ab, is (a + b)2 = c + d + e?
a, b, c, d and e are positive integers
Can anyone explain with an example to check whether a function is onto or not???
A jar had 40 ounces of milk. Ram drank one ounce of the milk in the jar. He replaced the quantity with equal amount of water. He then drank 2 ounce of it and replace it with 2 ounce of water. He then drank 3 ounce of it and replaced with 3 ounce of water. He continued to drink and replace in this manner until he drank all the contents of the jar. How much water did he drink?
the greatest possible number of points of intersection of 8 st.lines and 4 circles?
(a) 32, (b) 64, (c) 76, (d) 104.
I'm getting 104(d). answer is 76(c). Is my answer wrong or the book's?
Ram and Kanti working together can complete a job in 189/16 days.
Ram started working alone and quit the job after completing 1/3rd of
it, and then Kanti completed the remaining work. They took 25 days to
complete the work in this manner. How many days could Kanti have taken
to complete the job working alone?
Hard nut Q.17
the mean proportional between two numbers is 9 and the third proportional of the two numbers is 243. find the larger of the two numbers ? oa-27
a three digit number has its two digits equal. find the max possible ratio of the number and the sum of digits , if the number is not divisible by 10? oa- 52 3/19
A can complete a piece of work in 'a' days by working 'm' hrs per day, and B can complete the same
work in 'b' days by working 'n' hrs per day. If each of them reduces his working hours per day by 4
hrs, each of them would take 5 days more to finish the job (a, b, m and n are distinct natural
numbers and m, n less than 16.
How long would it take to complete the work, if A and B started working together such that A worked for 'm' hrs per day and B worked for 'n' hrs per day?
The probability of a man taking one step to his left is 0.4 and that to his right is 0.6.what is the probability that at the end of 9 such steps,he has moved a net distance of 1 step? 1.126(0.24)^4 2.(0.24)^4 3.126(0.24)^5 4.120(0.24)^4
If p, q and r are integers such that p^2 + q^2 = 221 and q^2 + r^2 = 125, then how many ordered triplets (p, q, r) are possible? ................Please reply with the approach:-)
No. of factors of N^2 are 15 . Find no. of factors of N4.
One of the answer is 29 and the other is 45.
In a class of 50 students, the number of students who passed in four subjects are given below
Subject number of students passed
Physics 31
Chem 34
Maths 30
English 27
The number of students who passed in exactly two subjects is at most __________.
Options:
1.61
2.48
3.45
4.50
Post your approach
If a=b^2=c^5=d^9, find the value of log(ab)base(a) + log(cd)base(a) ?
Approach please..
Number of squares are described whose PERIMETERS are described in GP. Then there sides will be in...
- G.P.
- A.P.
- H.P.
0 voters