If A={1,2,3},B={a,b,c} which of the following are relations from A to B?`R5={(1,d),(2,c),(3,a)}`

If A={1,2,3},B={a,b,c} which of the following are relations from A to B? R3={(3,2),(1,c),(3,a)}

If A={1,2,3},B={a,b,c} which of the following are relations from A to B? R2={(1,c),(2,b),(2,a)}

If A={1,2,3},B={a,b,c} which of the following are relations from A to B? R4={(2,c),(3,c),(4,c)}

If A={1,2,3},B={a,b,c} which of the following are relations from A to B? R1={(1,a),(1,b),(1,c)}

Which of the followings are relations from {x, y, z} to {a, b, c, d} ,{(x, d),(y, b),(z, c)}

Which of the followings are relations from {x, y, z} to {a, b, c, d} {(x, c), (y, y)}

Which of the followings are relations from {x, y, z} to {a, b, c, d} {(a, x),(b,y), (c, z)}

Which of the followings are relations from {x, y, z} to {a, b, c, d} {a, b, c, d, x, y, z}

Which of the followings are relations from {x, y, z} to {a, b, c, d} {(x, a),(x, b),(x, c), (x, d),(y, a) (y, b),(y, c),(y, d)}

If a,b,c,d are in G.P show that each of the following three term are also in G.P 1/(a^2+b^2),1/(b^2+c^2),1/(c^2+d^2) .