State which of the following sets are finite or infinite.
(i) `{x : x in N and (x-1) (x-2) =0}` (ii) `{x : x in N and x^(2)=4}`
(iii) `{x : x in N and 2x-2=0}` (iv) `{x : x in N" is prime"}`
(v) `{x: x in N and" x is odd"}`

State which of the following sets are finite or infinite : (i) { x : x ∈ N and (x – 1) (x –2) = 0 } (ii) { x : x ∈ N and x^(2) = 4 } (iii) { x : x ∈ N and 2x –1 = 0 } (iv) { x : x ∈ N and x is prime} (v) { x : x ∈ N and x is odd}

Find which of the following sets are finite and which are infinite sets: C={ x:x in R and x^2-1=0 }

Find which of the following sets are infinite and which are infinite sets: D={ n:n=x/(x+1) , where x in N and x lt 3 },

State which of the following sets are finite and which are infinite. Give reasons for your answer. (i) A={ x : x in N and x lt 100} (ii) B={x : x in N and x le 5} (iii) C={1^(2), 2^(2), 3^(2),....} (iv) D={1,2,3,4} (v) {x : x is a day of the week}

If A = {x:x in N and x is even} B = {x:x in N and x is prime} then the element of B cap C is

State the reasons for the following : (i) {1,2,3.....10} ne {x : x ne N and 1 lt x lt 10} (ii) {2,4,6,8,10} ne {x: x =2n+1 and x ne N} (iii) {5,15,30,45} ne {x : x is a multiple of 15} (iv) {2,3,5,7,9} ne {x : x is a prime number}

Which of the following pairs of sets are equal? Justify your answer. (i) X, the set of letters in “ALLOY” and B, the set of letters in “LOYAL”. (ii) A = {n : n ∈ Z and n^(2) ≤ 4} ,B={x:x ∈ R and x^(2) – 3x + 2 =0} .

Let f:N->N be defined by f(x)=x^2+x+1,x in N . Then f(x) is

The coefficient of x^(n-2) in the polynomial (x-1)(x-2)(x-3)....(x-n) is

Let A={x:x inNN},B={x:x in 2n,ninNN},C={x:x=2n-1, n in NN} and D= {x:x is a prime number} then____ C cap D is