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Karthik Raju

· started a discussion

· 1 Months ago

out of syllabus (Question: 111082.0 )

do we have sets and relations in ssc cgl ?,,,i dont see it in official syllabus

Question:
If A is the set of even natural less than 8 and B is the set of prime number less than 7, then the number of relation become A to B is:
Options:
A) 29
B) 92
C) 32
D) 29 - 1
Solution:
Ans: (a)

Number of possible relations from A to B is given by 2mxn

Where, m = number of elements of A,

n = number of elements of B,

So, here A = {2, 4, 6}, B = {2, 3, 5}

\(\therefore\) Number of possible relations = 23x3 = 29

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