Question

If the tens digit is twice the units digit in the given number 'ab', then what is the relation between 'a' and 'b'.
Choose the correct option(s).

• A. a = 2b
• B. b = 2a
• C. $b=\frac{a}{2}$
• D. a = 0.2 b

Answer 1

Answer: (A), (C)

The correct options are
A a = 2b
C $b=\frac{a}{2}$

The units digit in the number = b
The tens digit in the number = a
$\text{Tens digit}=2\times \text{units digit}$
$a=2\times b$
$a=2b$
$b=\frac{a}{2}$