The L.C.M of 2/3, 3/ 5, 4/7, 9/13 is :	Choose the correct choice from the following choices:
A) 45	B) 28	C) 36	D) 42	E) 32
Required L.C.M =L.C.M. of 2,3,4,9/H.C.F. of 3,5,7,13 =36/1= 
<gadget id="calculator">36/1</gadget>
<output>36</output>
36   Answer is 36
<result>C</result>
The L.C.M of 2/3, 3/ 5, 4/7, 9/13 is :