RUBI THERESA - 10th SAMACHEER MATHEMATICS - QUARTERLY 1 MARKS

If the ordered pairs (a + 2, 4) and (5, 2a +b) are equal then (a,b) is

• (2,-2)

• (3,-2)

• (5,1)

• (2,3)

If A = { 1,2} , B= {1,2,3,4}, C= {5,6} and D={5,6,7,8} then state which of the following statement is true

A = { a,b,p}, B = {2,3}, C = {p,q,r,s} then n[(A U C) x B] is

• 20

• 12

• 8

• 16

If there are 1024 relations from a set A ={1,2,3,4,5} to a set B, then the number of elements in B is

• 2

• 3

• 4

• 8

Let n(A) =m and n(B) =n, then the total number of non - empty relations that can be defined from A to B is

If n(A x B) = 6 and A = {1,3} then n(B) is

• 2

• 1

• 3

• 6

• {2,3,5,7}

• {2,3,5,7,11}

• {4,9,25,49,121}

• {1,4,9,25,49,121}

• Many - one function

• One to One function

• Identity function

• Into function

If { (a,8), (6,b) } represents an identity function, then the value of a and b are respectively

• (8,8)

• (6,8)

• (6,6)

• (8,6)

• {0,1,2}

• {1,2,3,4,5}

• {-4,1,0,2,7}

• {0,2,3,4,5}