Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
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

in how many ways can letters of word ‘ARRANGEMENT’be arranged so that two ‘A’ and two ‘R’ does not comes together?

in how many ways can letters of word ‘ARRANGEMENT’be arranged so that two ‘A’ and two ‘R’ does not comes together?

Grade:11

1 Answers

Arun
25763 Points
3 years ago
Dear Geetesh
Total - {2Rs together + 2As together - RRAA all of them together}
.. beacuse both the cases where 2Rs/2As are together also include RRAA. We need to subtract those... Sort of Venn diagram problem
= 11!/(2!*2!*2!*2!) - {(2*10!/2!*2!2!) - 9!/2!*2! }
 Regards
ARUN (askIITians forum expert)

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

ASK QUESTION

Get your questions answered by the expert for free