MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping
Menu
Grade: 12th Pass
        If the mth term of an A.P is n and nth term is m, find the rth term.
8 years ago

Answers : (3)

PRIYANKA TATA ASKIITIAN
78 Points
							

let a be the first term,d be common diff.

Tn=a+(n-1)d=m

Tm=a+(m-1)d=n

=>n-a=(m-1)d

=>d=n-a/m-1-----------(1)

now d also equal to m-a/n-1

=>m-a/n-1=n-a/m-1

on solving for a,we get a=m+n-1-------------(2)

put eqn2 in eqn1..we get d=-1

=>Tr=a+(r-1)d

puttin values of a and d,we get Tr = m+n-r

8 years ago
Durgesh Prasher
21 Points
							

m+n-r is answer

i wrote answers but this disgusting site on its own log outs ma accounts so lost whole expaination

telling in short

solve equation of am and an and get value of a and d d comes -1 and put ar=a+(n-1)d

and put values of a and d to get answers

8 years ago
Vikas TU
9107 Points
							

thnx

yr. ansr is correct!

Pleaz tell me ur e-mail id

or accont o facbook

so next time i can ask qustns frm u!

8 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies


Course Features

  • 731 Video Lectures
  • Revision Notes
  • Previous Year Papers
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Test paper with Video Solution


Course Features

  • 731 Video Lectures
  • Revision Notes
  • Test paper with Video Solution
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions


Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!! Click Here for details