how many nos bw 1 and 1000 are there such that n^2+3n+5 is divisible by 121??
a positive no is bold if it has 8 positive divisors that sum 3240.find the smallest bold no??
Need help with this question. Please post the solution, not just the answer.
Find the sum of coefficients of the terms x^139 and x^140 in the expansion of (1+x)^250x^0 + (1+x)^249x^1.......(1+x)^0x^250
A. 251C140
B. 252C141
C. 251C139
D. 252C140
Thanks
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which of the following number always divide ( N^7 - N ) .
13 9 7 5
The length of the edge of a cube ABCDA1B1C1D1 is 1. A point M is chosen on the extension of the edge AD such that D is between A and M and AM = 2 rt(2/5) . Let E be the midpoint of A1B1 and F the midpoint of DD1. What is the maximum possible value of the ratio MP/PQ , where P is a point on AE, while Q is a point on CF?
If a-b varies directly with a+b than a^2+b^2 varies directly with
1)ab 2)a^2-b^2 3)3a^2+2b^2-5ab 4)None of these
Choose all that apply
Please explain the approach..
find sum of all divisors of 2100 whose unit digit ends with 5
If K = 2^31 x 3^19, then how many positive divisors of K^2 are less then K but do not divide K?
how many three digit No's. can b made using at least one 2 and at least one 3 in each of them ?
If H1, H2, H3,...,Hn are 'n' harmonic means between 'a' and 'b'(not equal to 'a'), then the value of [(H1+a)/(H1-a)]+[(Hn+b)/(Hn-b)] is equal to?
A)n+1 B) n C) 2n D)2n+3Each of the five women-Amala, Kamala, Nirmala, Parimala and Vimala are of different ages and each of them has exactly one child. The five children are of different ages from 1 year through 5 years. If all the women were given ranks according to the decreasing order of their ages (i.e. the eldest woman gets the first rank) and all the children were given ranks in the similar manner, no woman has the same rank as her child. The names of their children are Chinna, Kanna, Munna, Rinku and Tinku. We know the following information about them.
Chinna is the eldest but his mother is not the youngest and Nirmala is not the eldest.
Who is the mother of the three year old child is elder than Vimala and Amala is elder than Kamala
The number of years by which Tinku is elder than Munna is same as the number of years by which Chinna is elder than Rinku.
Parimala's child is Tinku and the number of women elder than Parilmala is same as the number of children younger than Tinku.
1. Who is the child of Nirmala?(a) Chinna(b) Kanna(c) Rinku(d) cannot be determined
2. If Munna is the child of Vimala, then Parimala is elder than(a) Vimala(b) Kamala(c) Nirmala(d) cannot be determined
3. If Nirmala is elder than only one woman, then who is the mother of Rinku?(a) Kamala(b) Vimala(c) Amala(d) cannot be determined
4. Who is the eldest woman?(a) Vimala(b) Kamala(c) Parimala(d) Amala
5. Which of the following statements is true?(a) Rinku is three years old(b) Amala's child is five years old(c) Nirmala got the same rank as Tinku(d) Kanna is the child of either Vimala or Kamala.
1 and 8 are the first two natural nos for which 1 + 2 +3 + 4 ............... + n is a perfect square. which number is the fourth such number ?
For the number 2450 , the sum and the number of factors divisible by 5 is???
Where are those sectional tests that we used to take? They're kind of vanished after these small courses have been launched. Is they there any way to get access to those tests again?
find area enclosed between y=|x-2|-|x-6|, |y|=4,x=2,x=6
there are 10 white beads and 10 black beads.how many necklace can be made by using them?
find for which integer n is 2^8 + 2^11 + 2^n is a perfect square ?
if g(x)=1+x+x^2+x^3+x^4 and f(x)=g(x^2) then find the quotient when f(x) is divided by g(x).