help@askiitians.com

+91-87964 74404

Grade 12IIT JEE Entrance Exam

there are “m” and two women participating in a chess tournament.each participant plays two games with every other participant.if the bnumber of games played by the men between themselves exceeds the number of games played between the men and the women by 84, then the value of “m” is

aishwarya

7 Years agoGrade 12

1 Answer

Arun

7 Years ago

Theorem of Combination -

Each of the different groups or selection which can be made by taking r things from n things is called a combination.

$^{n}c_{r}=\frac{(n)!}{r!(n-r)!}$

- wherein

Where $1\leq r\leq n$

$^{m}\textrm{C}_{2}\times 2-^{m}\textrm{C}_{1}\times ^{2}\textrm{C}_{1}\times 2=8y\\\\m(m-1)-4m=84\\\\\Rightarrow (m-12)(m+7)=0\\\\\Rightarrow m=12$

Regards

Arun (askIITians forum expert)

Let S={x:x belongs to R(√3+√2)^(x^2-4) - (√3-√2)^(x^2-4)=10}. Then n(S) is equal to-

iit jee entrance exam

1 Answer Available

Last Activity: 10 Months ago

My rank is 29k, General, should I opt for any state college cse branch or some Nits in which in which I am getting ECE , chemical, mechanics etc....

iit jee entrance exam

1 Answer Available

Last Activity: 3 Years ago

How is Ranquer Eduzone,comparing, Akash,Fitjee,Resonance,Naryana

iit jee entrance exam

1 Answer Available

Last Activity: 4 Years ago

Can class 9th students study syllabus class of 11th

iit jee entrance exam

3 Answers Available

Last Activity: 4 Years ago

Sum of series 2[n/2] ! [n/2]!/ n! [2Co-2C2+3C2....+[-1]^n[n+1]2Cn] where n is an even positive integer. Kindly provide solution of this question and how to generalise this. How do we know that which expansion will give this?

iit jee entrance exam

1 Answer Available

Last Activity: 4 Years ago

View all Questions