How many integers from 10 to 180, inclusive, are divisible by 3 but not divisible by 7? Choose the correct choice from the following options:
A) 45
B) 49
C) 50
D) 52
E) 56
We should find # of integers divisible by 3 but not by 3*7= 
<gadget id="calculator">3*7</gadget>
<output>21</output>
21.   # of multiples of 21 in the range from 10 to 180, inclusive is   (168-21)/21+1= 
<gadget id="calculator">  (168-21)/21+1</gadget>
<output>8</output>
8;    57-8= 
<gadget id="calculator"> 57-8</gadget>
<output>49</output>
49.   Answer: 49.
<result>B</result>
How many integers from 10 to 180, inclusive, are divisible by 3 but not divisible by 7?