Question

If the tens digit is twice the units digit in the number 'ab'. Choose the correct option.

• A. a = 2b
• B. b = 2a
• C. a = b
• D. a = 0.2 b

Answer 1

The correct option is A a = 2b

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