plz solve this one of similarity..
Generic type question. 
Q. Ajay and Vijay undertake a work for 200 Rs. Ajay alone can do it in 24 days. Vijay alone can do it in 30 days, With the help of pradeep they finish the work in 12 days. How much they should pay pradeep for his work ?
a. Rs 20
b. Rs 100
c. Rs 180
d. Rs 50
Work and Time --
Q. Ashok and Mohan can do a peice of work in 12 days, Mohan and Binod can do it in 15 days. If ashok is twice as good as Binod, In how much time, Mohan Alone can do the work ?
a. 15 days
b. 20 days
c. 25 days
d. 35 days
π
A boy leaves home in the morning to go to school. At the moment he leaves the house he looks at the clock in the mirror. The clock has no number indication and for this reason the boy makes a mistake in interpreting the time (mirror-image). Just assuming the clock must be out of order, the boy cycles to school, where he arrives after twenty minutes. At that moment the clock at school shows a time that is two and a half hours later than the time that the boy saw on the clock at home. At wat time did he reach the school??
Please explain @ chillfactor sir.
Nitin is playing with some chess pieces on a 6 Γ 6 chessboard. Help him ο¬nd out some things.
1. Nitin ο¬rst places the black king in one corner of the board. In how many of the 35 remaining squares can he place a white bishop so that it does not check the black king?
2. Nitin then places a white king in the opposite corner of the board. How many total ways can he place one black bishop and one white bishop so that neither checks the king of the opposite color?
3. Nitin now clears the board. How many ways can he place 3 white rooks and 3 black rooks on the board so that no two rooks of opposite color can attack each other?
Note: Chess is a game played with pieces of two colors, black and white, that players can move between squares on a rectangular grid. Some of the pieces move in the following ways:
β’ Bishop: This piece can move any number of squares diagonally if there are no other pieces along its path.
β’ Rook: This piece can move any number of squares either vertically or horizontally if there are no other pieces along its path.
β’ Knight: This piece can move either two squares along a row and one square along a column or two squares along a column and one square along a row.
β’ King: This piece can move to any open adjacent square (including diagonally). If a piece can move to a square occupied by a king of the opposite color, we say that it is checking the king. If a piece moves to a square occupied by another piece, this is called attacking.
Cheers !!!
The difference of percentage points in the yield of groundnut as compared to the total yield of all four crops in 1998 and 2000 was (approximately)
- 10%
- 19%
- 28.5%
- 7%
0 voters
a train overtakes a cyclist travelling in same direction in 20 seconds.After travelling for 20 minutes from the time it started overtaking the above cyclist,it starts crossing a second cyclist coming from the opposite direction and takes 18 seconds to complete the crossing.After how many seconds from the time the train crossed the second cyclist,do the twocyclist meet each other ?
1994 : 167/568 1995 : 142/650 1996 : 207/812 hey guys does any one know a vedic maths trick for finding out percentages quickly for the above three years. Even an approximation technique will do.
Thanks,
x2 β 3y2 = 1376 ,How many integer solutions exist for the given equation?
How many numbers less than 100 can be expressed as a difference of two perfect squares in only ONE way?
Post with approach only.
i am a working professional with work exp of 3+ years; willing to appear in CAT 2013. I am based in kolkata. Can anybody suggest if BYJU's classes at kolkata through vsat will help me..?? I attended there workshop yesterday....but still in dilemma...please advise..
thanks in advance.
- yes
- no
0 voters
i am a working professional with work exp of 3+ years; willing to appear in CAT 2013. I am based in kolkata. Can anybody suggest if BYJU's classes at kolkata through vsat will help me..?? I attended there workshop yesterday....but still in dilemma...please advise..
thanks in advance.
677 has exactly 5 digits when converted into base 'n' from the decimal system. What is the minimumpossible value of 'n'?
The set S has 6 elements. How many subsets of S are there with at least 2 elements?
LCM of 2 nos(say a and b) is 300. How many sets of A and B are possible..??
ques Determine number of terms in expansion of (1+a1+a2+a3)^8
- 36
- 16
- 24
0 voters
ques Determine number of terms in expansion of (1+a1+a2+a3)^8
1) 16
2) 36
3) 24 Skip
Γ
please explain as well
plz tell how to approach in these two questions?
1- find the coefficient of x^4 in (1-x+x^2)^5 ?
2- find the integral values of x and y in x^2-3y^2=1376 ?
58 is divided into n equal parts such that their product is maximum. wat is d value of n ?