Home
Class 7
MATHS
If aN = {ax : x in N} , then the set 3 N...

If `aN = {ax : x in N}` , then the set `3 N cap 7 N` is

A

`{21 x : x in N}`

B

`{ 42 x : x in N}`

C

`{63 x : x in N}`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • SETS

    S CHAND IIT JEE FOUNDATION|Exercise Question Bank |24 Videos

  • RATIO AND PROPORTION

    S CHAND IIT JEE FOUNDATION|Exercise SELF ASSESSMENT SHEET - 15 |10 Videos

  • SIMPLE INTEREST

    S CHAND IIT JEE FOUNDATION|Exercise Self Assessment Sheet |10 Videos

Similar Questions

Explore conceptually related problems

If a N = { ax : x in N} then the set 4N cap 6N is

If aN={ax|x in N}, then: 3Ncap7N=

If N_(a) = {ax| x in N} , then what is N_(12) cap N_(8) equal to ?

If a in N such that aN={ax:x in N} Describe the set 3N nn7N.

If A={x:x=3n,n in N} and B={x:x=4n,n in N} , then find A cap B .

if a N= {a x:x iin N} and b N cap c N , where b,c in N are relatively prime , then

Let A = { n in N | n^(2) le n + 10,000 } B = { 3k + 1 | k in N } and C = { 2 k |k in K } , then the sum of all the elements of the set A cap (B - C) is equal to ______