B={the set of all positive integers leaving a remainder of 45 when divided by 454}

C={the set of all positive integers leaving a remainder of 454 when divided by 4545}

D={the set of all positive integers leaving a remainder of 4545 when divided by 45454}

Find the smallest number in the intersection of

1)Sets A and B;

2)Sets A and B and C;

3)Sets A and B and C and D.