UPSKILL MATH PLUS

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Say True or False.
 
1. Successor of a one digit number is always a one digit number.
 
2. Predecessor of a \(3\)-digit number is always a \(3\) or \(4\)-digit number.
 
3. In the Indian System of Numeration the number \(67999037\) is written as \(6,79,99,037\).
 
4. \(88,888 = 8 \times 10000 + 8 \times 100 + 8 \times 10 + 8 \times 1\)