Question

1
1. The difference between successor and
predecessor of any number is
(a) 0 (b) 1 (c) even (d) odd
2. The sum of successor of 120 and predecessor
of 60 is
(a) 179
(b) 180
(c) 189
(d) 181
3. Greatest 7-digit number formed by 8, 9, 3,
O is
(a) 9998930
(b) 9999830
(c) 8939900
(d) 9830000
4. 'O' is called
in the set of whole
numbers.
(a) multiplicative identity
(b) additive identity
(c) additive inverse
(d) multiplicative inverse
1​

Answer 1

Answer:

1. b

2.180

3.b

4.additive identity