How many positive integers less than 100 are neither multiples of 2 or5.  Select:	A) a)30	B) b)31	C) c)40	D) d)33	E) e)34
To answer this Q we require to know   1) multiples of 2 till 100 = 100/2= 
<gadget id="calculator">100/2</gadget>
<output>50</output>
50   2) Multiples of 5 till 100= 100/5= 
<gadget id="calculator">100/5</gadget>
<output>20</output>
20   add the two 50+20= 
<gadget id="calculator">50+20</gadget>
<output>70</output>
70 ; subtract common terms that are multiple of both 2 and 5..   Lc)40M of 2 and 5= 10   Multiples of 10 till 100 = 100/10= 
<gadget id="calculator">100/10</gadget>
<output>10</output>
10   so total multiples of 2 and 5= 70-10 = 6   ans = 100-60= 
<gadget id="calculator">100-60</gadget>
<output>40</output>
40   c)40
<result>C</result>
How many positive integers less than 100 are neither multiples of 2 or5.