The difference between the predecessor and the successor of 1 million is ____.
The correct option is C 2
1 million = 1,000,000
The successor of a number is one more than that number and the predecessor of a number is one less than that number.
The successor of 1,000,000 = 1000000 + 1 = 1000001
The predecessor of 1,000,000 = 1000000 - 1 = 999999
The difference between the successor and the predecessor of 1,000,000 = 1000001 - 999999 = 2.