A 100 ml flask contains 30% acid solution. What quantity of the solution should be replaced with 12% acid solution so that the resultant solution contains 21% acid?
Find the circumference of the circle whose area is equal to that of an equilateral triangle whose perimeter is given as 'P'.
X lend out Rs. 9 to Y on condition that the amount is payable in 10 months by 10 equal installments of Rs. 1 each payable at the start of every month. What is the rate of interest per annum if the first installment has to be paid one month from the date the loan is availed.
I have a solution but looking for a better approach..so pls share the approach too!!
In a college basketball contest, players must make 10 free throws. Assuming a player has 90% chance of making each of his shots, how likely is it that he will make all of his first 10 shots?(a) 30% (b) 35% (c) 45% (d) 50%
A train X starts from Agra at 5 pm and reaches Delhi at 10pm Another train Y starts from Delhi at 7pm and reaches Agra at 11pm.At what time trains will meet?
there is an explanation given for this question as:-
"Time ratio of Train X to Train Y is 5:4. The Distance covered by trains respectively will be in ration 4:5. Train X leaves at 5 PM and Y leaves at 7 PM. That means that train X will have travelled two hours before train Y leaves.Now from 7 PM to 10 PM, divide the time frame in 9 points ( corresponding to distance 5+4=9) each frame equating to 20 mins. The point where both train meets will be in ration 4:5 i.e. 4*20 mins = 80mins. Therefore trains will meet at 7 + 1 Hr 20 Mins. i.e. 8:20 PM"
Query--My query is why can't we do 5*20=100 mins and get the answer as 8.40....
please help me with this......
Directions: Answer the given question based on the following data:
Lina, Mina, Dika and Chika each own a doll, a ball, a marble and a yo-yo, not necessarily in that order. Chika did not possess the yo-yo. Each is asked three questions
(i) Do you own a ball? (ii) Do you own either a marble or a yo-yo? (iii) Do you own either a yo-yo or a doll?
Each answers at least two questions truthfully. Their answers are
Lina: Yes, Yes, No Mina: Yes, No, Yes Dika: No, Yes, Yes Chika: No, No, Yes
Lina's answer sequence was
True, True, True
True, True, False
True, False, True
False, True, True
False, False, False
Dika's answers sequence was
True, True, True
True, True, False
True, False, True
False, True, True
False, False, False
Directions: The following problem consists of a question and two statements labeled as (i) and (ii). You have to decide whether the data given in the statements are sufficient to answer the question. Mark the appropriate choice from (1) to (5). What is the area of the circle?(i) The length of the shortest tangent to the circle from point (0, 0) is 5 cm.(ii) The area of the circle is 4 times its circumference.
1. Statement (i) alone is sufficient, but statement (ii) alone is not sufficient.
2. Statement (ii) alone is sufficient, but statement (i) alone is not sufficient.
3. Both statements (i) and (ii) together are sufficient, but neither statement alone is sufficient.
4. Each statement alone is sufficient.
5. Statements (i) and (ii) together are not sufficient.
A cherry is a round fruit with a stone inside. If the flesh of the cherry around the stone is as thick as the stone itself, then the ratio of the volume of pulp to that of stone of that cherry is
16 : 1
26 : 1
9 : 1
27 : 1
8 : 1
1!+2!+3!+4!+5!+6!+7!+8!+9! .......... find the last two digit of the the sum ?
find no of zeros at the end of product
1^1*2^2*3^3........49^49*50^50 ???????
How many 4-digit odd no.s can be formed such that every 3 in the no. is followed by a 6?
OA- 2696
Pls post your approach/soln
The odds in favour of standing first of three students Amit,Vikas and Vivek appearing at an exmination are 1:2,2:5 AND 1:7 respectively.What is the probability that either of them will stand first (assume that a tie for the first place is not possible)
a)168/178
b)122/168
c)5/168
d)125/168
Steps Please
Find the number of factors of 480, which are divisible by 6 but not by 8
- 2
- 16
- 8
- 4
0 voters
sum of series : 3 7 14 24 37 ......... till 100 terms ?
When a 5 digit no. is multiplied by 4, it becomes reversed.
ABCDE*4=EDCBA
where A,B,C,D,E are distinct non-zero digit. Find the values of A,B,C,D,E??
PLEASE EXPLAIN...
Q1. If x, y and z are integers and x + y + z = 3, the what is the minimum value of 1/x + 1/y + 1/z ?
a. -3 b. -9/5 c. 3 d. 0
ans is b
x=y=1 and z=-5 we get -9/5 as min
can this be solved by AM>=HM. Anyone please
a man can rows to a place 55km distance and back in 20 hours rows 5.5 km with the stream and 4.5 against the stream. Find the Rate of stream
Write Your Method
- 7/9
- 5/8
- 4/9
- 5/9
- 7/8
0 voters
here are 5 pairs of hand gloves of 5 different colours. In how many ways can they be paired so that a left "“ hand glove and a right "“ hand glove are not of the same colour?
20
44
9
5!
How many four digit whole numbers 'n' are possible such that the last four digits of n2 are in fact the original number 'n'?
If S=15!+16!+17!...............+20! is divided by 112112 what is the remainder