Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
381 views
in Mathematics by (25.0k points)
A shopkeeper places before you 41 different toys out of which 20 toys are to be purchased. Suppose m = number of ways in which 20 toys can be purchased without any restriction and n = number of ways in which a particular toy is to be always included in each selection of 20 toys, then `(m - n)` can be expressed as
A. `(2^(10))/(20!)(1.3.5"….."39)`
B. `(2^(20)(1.3.5"….."19))/(10!)`
C. `underset(r=0)overset(19)(II)((4r+2)/((20-r)))`
D. `(21/1)(22/2)(23/3)"…."(40/20)`

Please log in or register to answer this question.

1 Answer

0 votes
by (25.1k points)
Correct Answer - A

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...