If $^{r+2}C_{8}:^{r-2}C_{4}=57:16$ then r=

Loading...

Command Palette

Search for a command to run...

ClassNotes

Human-reviewed study resources for board exams, entry tests, and structured practice across notes, MCQs, flashcards, and past papers.

Support: [email protected]

Business: [email protected]

North America: +1 (512) 666-1423

Asia / MENA: +92 340 9170227

We typically reply within 3 business days.

Explore

Classes
Posts
MCQs
Flashcards
Search

Company

About
Contact
Tutors
Editorial Standards

Policies

Privacy Policy
Terms of Use
Cookie Policy
Refund Policy
Shipping Policy

© 2026 ClassNotes Inc. All rights reserved.

Allen, Texas and Lahore, Pakistan. Public support pages are available for privacy, terms, cookies, refunds, shipping, and editorial standards.

Shop
Tutors

If $^{r+2}C_{8}:^{r-2}C_{4}=57:16$ then r=

E

Editor

Sep 18, 2022

If $^{r+2}C_{8}:^{r-2}C_{4}=57:16$ then r=

Difficulty: Easy

A:

12

B:

4

C:

3

D:

19

ID: 63273dbaca83163ac3a12487