Math Is Fun Forum

juan answers 6 questions in an exam. The marks are in the range of 0 to 10 for each question. He never receives more marks in an earlier question than in a later question. Fin the no. of arrangements in which he can get the mark.s

what is probability that three points selected on a circle forms a right angled triangle

sum of digit in

Let

.Consider all positive differences of elements of

.

If

is the Sum of all these differences,find the Sum of the digits of

number of 5 digit no which can be read in the same way from the right and from the left is

find Minimum value of

, Where

Using Holder, s Inequality and When Does the Equality Hold

Thanks

The number of ways of forming an arrangement of 4 letters from the letters of the word “IITJEE”

if

be the no. of points on side

and

f the triangle . them find no. of triangle which can be formed by the taking these points as a vertices.

show that it is not possible to have atriangle with sides a,b and c whose medians have lengths 2/3a , 2/3b and 4/5c