Let `A={x:x in N` and x is a multiple of 2},
`B={x:x in N` and x is a multiple of 5} and
`C={x:x in N` and x is a multiple of 10}.
Describe the sets `(A nn B)nn C`

Let A={x:x in N and x is a multiple of 2} , B={x:x in N and x is a multiple of 5} and C={x:x in N and x is a multiple of 10} . Describe the sets A uu (B nn C)

Let A={x:x in N and x is a multiple of 2} , B={x:x in N and x is a multiple of 5} and C={x:x in N and x is a multiple of 10} . Describe the sets A nn (B uu C)

Find the union and intersection of the sets. A={x:x in N and 1' <'x<6 } , B={x:x in N and 6'<'x<10}

If none of the angles x, y and (x+y) is a multiple of pi , then cot (x+y)=(cot x cot y-1)/(cot y+cot x)

Find the union of each of the following pairs of sets: i) X={1,3,5} Y={1,2,3} ii) A={a, e, i, o, u}, B={a, b, c} 'iii) A={x: x is-a natural number and multiple of 3} B={x: x is a natural number less than 6} iv) 'A={x: x is a natural number and '1 B={x: x is a natural number and '6 v) 'A={1, 2,3}, B= {phi}

Write the following sets in roster form and identify equal sets ( if any) A={x:x in R anfd x^2 = 25} B= {x:x in N and x^2 = 25} C = {x:x in R and x^2 - 10x+25 = 0} D = {x:x in N and x^2 - 8x+15=0}

Find the union of each of the following pairs of sets: A = {x:x is a natural number and multiple of 3} B = {x:x is a natural number less than 6}

Which of the following sets are empty sets? i) A={ x: x^2-3=0 . and x is rational } ii) B={x: x is an even prime number } iii) C={x: 4 lt x lt 5, x in N} iv) D={x: x^2=25 and 'x' is an odd integer.}

State which of the following sets are finite or infinite {x:x in N and x^2 -3x+2=0}