If in any number the unit’s digit is a and the ten’s digit is b, then that number is—
A. 10a + b
B. a + 10b
C. a + b
D. ab
Answer:B
If in any number the unit’s digit is a and the ten’s digit is b, then that number is—
A. 10a + b B. a + 10b C. a + b D. ab