There are 3 persons Ajay, Bjkram & Chetan. Ajay can make a wall in 15 days, Bikram can make the same in 20 days & Chetan can make it in 25 days. A new person, Davinder is introduced who is very efficient in making walls. Ajay, Bikram & Chetan started working on different walls. Davinder helped all three of them in completing their respective walls such that all three were able to complete their respective walls in 10 days. Had all of them worked together, in how much time could they have built one wall?
V is an 8-digit number containing 7 zeroes. If V2 is a sixteen-digit number, then how many different values of V are possible?
Consider the sets Sn= {n, n+3, n+5, n+7, n+9} where n= 1, 2, 3, ... 99. How many of these sets contain 5 or its multiple?
For how many positive integers V less than 15, is V! + (V + 1)! + (V + 2)! an integral multiple of 36?
Any small method for this ?
vinay fires 2 bullets from the same place at an interval of 12mins but raju sitting in a train approaching the place hears the second report 11 min 30 sec after the first. wot is the approx speed of the train given sound travels at 330m/sec ?
A can complete a piece of work in 12 days, B in 15 days and C in 20 days. All of them together
started the work but C left when he realised that the remaining work will be completed without him
in the next two days, and B left when he realised that the remaining work will be completed without
him in the next one day. Find the total number of days taken to complete the work.
Options :-
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Hi, I am back to PG after a long time. I wish many of you are preparing true to your potential. I made some videos related to Quant Preparation. I am going to prepare more videos for all the remaining Quant and LR/DI topics in the next 15 days.
The average marks of a class of n students is 64. When 8 new students with an average mark of 73 join d class, the new average of entire class is a whole no. Find no of students in class, given dat n lies between 25 and 60
Plz explain
- 36
- 28
- 54
- 72
0 voters
The perimeter of a triangle, having length (in cm) of each side as integers, is 24. What can be said about the minimum value of the area (in sq. cm) of such a triangle?
1. Less than 12
2. Between 12 and 16
3. between 16 and 20
4. Between 20 and 24
What is the radius of the biggest possible circle that can be drawn in a sector of radius 10 cm and a central angle of 120 degree. ??
How many three-digit odd numbers ending with 1 or 3 are possible such that the sum of the number and the number obtained by reversing the digits is a four-digit number?
40
45
50
60
Find the remainder when 3(12!)-15(11!) divides 22(11!)+22! ??
A class has 100 students with roll numbers from 1 to 100. Six students are selected, one after another, at random to form a team to take part in a quiz competition. Find the probability that the roll numbers of the first three students selected are in ascending order and the roll numbers of the last four students selected are in descending order.
If Arjun wants a mobile number where the sum of the last five digits is 11, how many mobile number can he potentially get? OA not know , So open for discussion
- 120000
- 1365
- 1450
- NOT
0 voters
The equations of two equal sides AB and AC of an Isosceles triangle ABC are x+y=5 and 7x-y=3 respectively. What will be the length of the intercept cut by the side BC on the Y-axis?
a. 9/5 b. 8 c. 1.5 d. No unique Soln
A question from Arun Sharma's book.....Plz explain with soln