Bella keeps a supply of red, blue, and black pens in a drawer. The drawer has 17 red pens, 18 blue pens, and 11 black pens. If Bella wants a red pen, what is the minimum number of pens she has to pull out from the drawer to make sure she gets a red pen?
October 15, 2013
We want to build a rectangular cardboard box with no top and of given volume V using the least quantity of cardboard. Find the length of the box's edges by fnding the minimum of the total surface function. Verify that the point you found is indeed a minimum applying the ...
April 25, 2013
least number between the given range =36; to find the maximum no. divide 395 by 6 ;we get remainder to be 5 ;Therefore 395-5 will purely divided by 6 and also be the maximum no. in the given range Also total nos.:390=36+(n-1)6 calculate for n ; then apply 36+42+......+390=n/2(...
February 21, 2010
slope of the line will be same to that of the given line i.e. 3 Now let the eq. be y -3x = m (where m is any parameter) this line passes through (5,1) therfore satisfying it we get m = -14 thus, eq. of required line is y =3x -14
February 20, 2010
The sum of the co-efficients in the expansion of (1 - 2x +5x^2)^n is a and the sum of the co-efficients in the expansion of (1 +x)^2n is b.Then (A) a=b (B) (x-a)^2 + (x-b)^2 =0 (C) (sin a)^2 + (cos b)^2 =1 (D) ab=1 Ans. A,B,C But How???
February 19, 2010
I want to have a deep insigth to my problem i.e. I know that bonds between atoms(of different or same elements)to be formed are based on no. of electrons less in octet or duplet(say O2, each O atom has two electrons less in octet thus forms two bonds).But why bonds between e...
February 10, 2010
democratic politics 10th grade cbse
1.produce decisions taking a lot of time 2. not free from corruption 3. money and muscle power have an influence on politics. 4. criminal connections also a demerit of democracy
December 23, 2008