A beaker of capacity 4 lit is completely filled to brim with aqueous Hydrochloric acid containing 75% HCL. Spherical pebbles ,each of volume 0.1 cc are dropped into the beaker and as a result of this some part of the mixture overflows . If the pebbles are removed and water is added to the beaker so as to exactly replace the volume of the mixture overflowed ,then the resultant concentration of Hcl in the beaker is found to be 60 % .Find the number of pebbles that were dropped into the container .
A cyclic quad is such that 2 of its adjacent angles are divisible by 6 and 10 resp. One of the remaining angles will necessarily be divisible by
a) 3 b)4 c) 8 d) NOT
2 cards are drawn from a pack of 52 cards without replacement. what is the probability that one is an Ace and other is a diamond?
In a manufacturing company,the average salary of all the 6 production managers is 8000 while that of the administrative employees is rs 3500.The average salary of the production managers and administrative employees is Rs 4000.All the production managers all males and in the administrative employees,the females get an average salary of Rs 4500 and their male counterparts get an average salary of rs 3000
How many men are there among the administrative employees of the company?
- 50
- 32
- 44
- 26
0 voters
Jeevanlal made 10% profit on selling a toy . If he had purchased it for 10% lesser than the cost price purchased it at 10% less cost and had he obtained 30% profit he would have recieved rs. 49 more . what is the origial selling price ?
From second line are they trying to say , Purchasing the toy at 10% of 10 % of original cost price and obtaining 30 % profit the difference in profit is 49 . ? i couldnt get the sentence formation there !
Assuming above
cost price of toy = x
original selling price = 1.1x
Profit = 0.1x
Now
.9(0.9(x)) =o.81x is the new cost price
and 1.3(0.81x)= 0.891x is the new selling price ,which is 49 more than original profit received (right ? :o) .
Profit = 0.891x-0.81x = 0.081x
so 0.1x+49=0.081x
.919x= - 49 ?
can some one xplain the approach ?
- 700
- 630
- 770
- 840
0 voters
Solve :
purse contains 4 coins either 1 rs or 5 rs, 2 coins are drawn and both are 5 rs.both coins are placed in and again one coin is drawn out. probability of that coin being 1rs?
A dog pursues a cat and takes 5 leaps for every 6 leaps of cat, but 4 leaps of the dog are equal to 5 leaps of the cat. Compare the speeds of the dog and the cat?
A.5:6
B.9:16
C.24:25
D.4:5.
How many distinct 6 digit no.s are there having 3 odd and 3 even digits??
a unit radius coin flipped into a square of side 10 units . what is the probability that the coin lies completely inside the square ?
Let R1 and R2 respectively denote the maximum and the minimum possible remainders when (276)^n is divided by 91, for any natural number n, n>=(greater than, equal to) 144.Find R1 + R2
1)90 2)108 3)84 4)64 5) None of these
If n is a postive integer such that 2n has 28 positive divisors and 3n has 30 positive divisors, then how many positive divisors does 6n have ?
Let A and B be two solid spheres such that the surface area of B is 300% higher than the surface area of A. The volume of A is found to be k% lower than the volume of B. The value of k must be
A> 85.5 B> 92.5 C> 90.5 D> 87.5
What is the unit digit of 1^2! + 2^3! + 3^4!....+49^50! + 50^51! ?
1, 3, 5 ,7
I have doubt in the answer which is given as 3 ...Pls post the soln ..
Find a+b if a^2 + b^2 = 4693, where a and b are natural numbers.
Find highest natural no. N, less than 400, such that N can be written as sum of consecutive natural nos. in 11 ways but cannot be written as sum of 11 consecutive natural numbers.
A and B decided for a shopping and plan to meet between 3:00 AM to 4:00 AM. One agrees to wait 15min for the other to arrive. After 15min , the person will leave and continue shopping. What is the probability that both meets if both arrives anytime between 3 AM to 4 AM.
How many words can be formed from 'AABBCC' IN WHICH NO CONSECUTIVE LETTERS BEING SIMILAR?
- 30
- 60
- 15
- None of these
0 voters