Find the smallest number of four digits exactly divisible by 4,5,7 and 8. Choose the correct choice.
A) 1150  B) 1160  C) 1140  D) 1152  E) 1145
Smallest number of four digits is 1000.   Required number must be divisible by L.C.M. of 4,5,7,8 i.e 280,   On dividing 1000 by 280,we get 120 as remainder.   Therefore, Required number = 1000 +( 280 â€“ 120 ) = 1160.   Answer is 1160.
<result>B</result>
Find the smallest number of four digits exactly divisible by 4,5,7 and 8.