Published by:
CGP EDU Academic Team
Published on: August 23, 2026
Let 
and 
be relations on the set 
such that 
is a prime and 
is an integer 
and 
is a prime and 
or 1 
. Then, the number of elements in 
is
Text Solution
Verified by ExpertsThe correct answer is:
28
(28) Here, 
Now 
can take values 2,3,5,7,11,13,17,23,29,31,37,41,43 and 47.
we can calculate no. of elements in 
, as
And rest for all other two elements each
Similarly, for 
──────────────────────────────────────────────────────────────────────────────────────────
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
PART-I PHYSICS
SECTION-A
Given below are two statements: One is labelled as Assertion A and the oth…
A particle of mass is moving in a circular path of constant radius such that its centripetal acce…
Motion of a particle in plane is described by a set of following equations and . The path of par…
Match List-I with List-II
Question: Choose the correct answer from the options given below
Two planets and of equal mass are having their period of revolutions and such that . These pla…
A water drop of diameter is broken into 64 equal droplets. The surface tension of water is . In t…