4 lt taken out from 20 so 1/5 part remaining milk =4/5 , this process is done for four times milk remained=20*(4/5)^4 water= 20-milk solve and get an...

let the ratio be x:y:z (1*x+2*y+3*z)/(x+y+z)=1.5 solving this we will get this equation y+3z=x (option c satisfies th...

answer is 50?

Jaune Y = (4 C1)*(5 C 2) = 4*10 = 40Jaune X = (4 C 2)*(5 C 1) + (4 C 3) = 6*5 + 4 = 34Total combinations = 9C 3 = 84Probability of Jaune = (40 + 34)/8...

if we assume that each couples as a one person total 3 person in a row and the probablity of three person, where couples seat together, on five chairs...

what are the options ?

avg of square of first n natural nos is (n+1)(2n+1)/6=130 2n^2+3n+1=780 2n^2+3n-779=0 n=[-3+√(9+6232)]/2 n=38 sum of cube of first n natural nos. is ...

hi, richa area of smaller circle =1 r=1/√pi therefore, R=r/3 so this fig will be made I could only come up with this solution if u get a better s...

Hi richa, Sir has highlighted a equilateral triangle which will be formed between two circle.... And then at the centre of upper left circle two 60 an...

is it right sir ?

hi richa PFA solution

Hi Richa If we see clearly red curve is made by joining half circumference of each circle so Req arc = 4( half circumference) = 4* pi* 6 =24 pi

Alternate approach you can solve by average (10*2 + 20*3 +30*p)/(2+3+p) =23 80 +30p=115+23p 7p=35 p=5