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May
16
comment Find the number of quadratic polynomials ax² + bx + c
Yes i have taken this question from the site,the problem is i am not satisfied wiith the logic,thats why i wanted a different approach to tackle this question,i also pasted the solution given there but still logic is vauge.the point is i am in search of simple and clear solution.i dont think i am wrong.
May
16
comment Find the number of quadratic polynomials ax² + bx + c
@Ross Yes i have taken this question from the site,the problem is i am not satisfied wiith the logic,thats why i wanted a different approach to tackle this question,i also pasted the solution given there but still logic is vauge.the point is i am in search of simple and clear solution.i dont think i am wrong.
May
16
comment Find the number of quadratic polynomials ax² + bx + c
@ Ross,please have a look on my logic just below the question
May
16
comment Find the number of quadratic polynomials ax² + bx + c
I have uploaded my answer ......just below the question.
May
16
comment Find the number of quadratic polynomials ax² + bx + c
Reasoning->b=a+c b ranges from 3 to 2008 x1+x2=n has n-1C1 solns.Using th elogic we get 2+3+..2007 solutions. A total of 2015027 solutions.here,condition 1 comes into picture telling us that a,b,c are distinct.Therefore the even values of b ie.4,6,8,..2008 will have one solution less ie.from the given solution subtract 1003 thus giving us 20104024.
May
16
comment Find the number of quadratic polynomials ax² + bx + c
i have applied the above logic but still i am not getting the correct answer.
May
16
comment Find the number of quadratic polynomials ax² + bx + c
as c=b-a when c=1 we will have 2007 pairs((2,1),(3,2)….) when c=2 we will have 2005 pairs when c-3 we will have 2004 pairs… . . . when c=2007 no. of pair is 1.
May
16
comment Find the number of quadratic polynomials ax² + bx + c
i have solved it but i am not getting the correct answer.can you pplease elobrate your approch
Apr
25
comment the maximum number of blocks that will fit inside the box?
@Hans i was facing problem that.......I thought that there can be multiple way to assemble so how can i get to know in which way maximum will fit........Now i am clear Thanx
Apr
25
comment the maximum number of blocks that will fit inside the box?
@Hans ya ya..in this way in any way we will get 25*5=125
Apr
25
comment the maximum number of blocks that will fit inside the box?
@Hans If the box is resting on a side that is 60 cm by 30 cm, then 60/12 , 30/6 × = 5 × 5 = 25 blocks will fi t on the bottom layer. In this case, the height of the box is 20 cm and 20/4 = 5 layers will fi t inside the box.
Apr
25
comment the maximum number of blocks that will fit inside the box?
@Hans If the box is resting on a side that is 30 cm by 20 cm, then 30/6,20/4 × = 5 × 5 = 25 blocks will fi t on the bottom layer. In this case, the height of the box is 60 cm and 60/12 = 5 layers will fi t inside the box.
Apr
24
comment Number of ways to distribute the coins?
I am very glad.....to get such a simple solution.....Thanks.......My way of calculation was bit messy
Apr
24
comment Number of ways to distribute the coins?
(4,0,0)->3 ways (3,1,0)-> 18 ways (2,2,0)-> 12 ways (2,1,1)-> 21 ways , so totel is 3+18+12+21=54.....What do you think....is this right logic...if coins are(A,A,B,C)
Apr
24
comment In how many ways balls be distributed in boxes?
I am asking that if No boxes are empty then..??
Apr
24
comment In how many ways balls be distributed in boxes?
If no boxes should be empty then what will be logic?
Apr
24
comment In how many ways balls be distributed in boxes?
I got your logic......If no boxes should be empty then what will be logic........can you assist me
Apr
22
comment How many plates can be made?
at the same time they are concidring 001,003,004,089 are three digit number..thet is right..but they dont think 000 is anumber..i dont know why?
Apr
22
comment How many plates can be made?
i think they are considring 000 not a number
Apr
22
comment How many plates can be made?
i have a suspicion about the 1st question whether it will be 26*26*999 Or 26*26*1000.........I am not getting why the text book is used 999