If you write down all the numbers from 1 to 50, then how many times do you write 3 ?	Choose the correct choice:
A) A)11 B) B)15 C) C)20 D) D)21 E) E)22
Explanation:   Explanation:   Clearly, from 1 to 50, there are ten numbers with 3 as the unit's digit- 3, 13, 23, 33, 43, and ten numbers with 3 as the ten's digit - 30, 31, 32, 33, 34, 35, 36, 37, 38, 39.   So, required number = 5 + 10= 
<gadget id="calculator">5 + 10</gadget>
<output>15</output>
15.   Answer:15
<result>B</result>
If you write down all the numbers from 1 to 50, then how many times do you write 3 ?