@nishata996
Started 3 weeks ago in
roots
If x =(root2- 1), find the value of x4 + 4x3 + 6x2+4x +8.
@nishata996
Started 3 weeks ago in
am gm
The difference between two numbers is 128 and the difference between the arithmetic mean and the geometric mean is one less than of 1/3 of 99. Find the numbers.
@nishata996
Started 3 weeks ago in
tsd
A ship was late to sail by 30 mins due to bad weather, they tried to make up for the lost time by speeding the ship by 20 km/hr more than the normal speed for a section of 160km. What is the original speed of the ship?
@nishata996
Started 3 weeks ago in
linear and quardratic equation
in a annual sports meet inย boys school the boys present in the meetย when arranged in a solidย square , have 16 boys less in the front row,then when arranged in a hollow square 4 deep. find the number of boys present, in the sports meetA)567B)676C)625D)576E)225
@nishata996
Started 3 weeks ago in
logarithms
let,w=(log (base2) b)^2+6log(base2)b+12 and b is a real number,thenย b^w=1/256,hasa) no solutionb) exactly one solutionc) exactly 2 distinct solutionsd)exactly 3 distinct solution
@nishata996
Started 3 weeks ago in
averages
5 year ago the average age of A,B,C was 21 yr the average age of B,C was 22 yr ,3 year ago. What is the present age of A?
@nishata996
Started 3 weeks ago in
logirithm
let log base x 4=log base16ย y=logbase zย ย 32,wher x,y,zย are positive integer then what is the value of y
@nishata996
Started 3 weeks ago in
pipes
A tank has a capacity of 480 litres. it has 3 pipes,:A,B,C. A and B are inlet pipes filing at the rate of 10 litr per minute and 4 litr per min. pipe c is an outletย pipe removing water at the rate of 2 litr per mint the process ito fill the tank issuch that 3 pipes are turned alternately,one at a time,first the pipe A is kept open for 1 mint, the it is closed and pipe c is opened for a mint and then it is closedand the process repeated till the tank is completely filled. t=how many mint it take to fill the tank?
@nishata996
Started 3 weeks ago in
euation
IF r is a constant such that |x^2-4x-13|=r has exaCTLY THREE DISTINCT REAL ROOTS THEN THE VALUE OF r IS
@nishata996
Started 3 weeks ago in
men and days
amit take 20 days to complete a work.Amit started the workย and suraj joined him 4 days before the work was completed. Find out the number of days forย which amit worked alone if suraj efficiency is 25% more than that of amit'sa]10daysb]8daysc]12daysd]11days