Identify the predecessor of the smallest 4 digit number.

Q.

The predecessor of smallest four digit number made using each of the digits 6, 2, 0, 8 only once is

Q. The predecessors of a 4 digit number can be a _____ digit or a _____ digit number.

Q. Write (T) for true and (F) for false against each of the following statements:
(i) Zero is the smallest natural number.
(ii) Zero is the smallest whole number.
(iii) Every whole number is a natural number.
(iv) Every natural number is a whole number.
(v) 1 is the smallest whole number.
(vi) The natural number 1 has no predecessor.
(vii) The whole number 1 has no predecessor.
(viii) The whole number 0 has no predecessor.
(ix) The predecessor of a two-digit number is never a single-digit number.
(x) The successor of a two-digit number is always a two-digit number.
(xi) 500 is the predecessor of 499.
(xii) 7000 is the successor of 6999.

Q. The predecessor of the smallest 3-digit number is
(a) 999 (b) 99 (c) 100 (d) 101