How many 4-digit positive integers are multiple of each integer from 1 to 10	Choose the correct answer.
A) 1520
B) 2520
C) 3520
D) 5140
E) 7660
Least No which could be divisible by integers [ 1,2,3,4,5,6,7,8,9,10] is the LCM of the said integers.   LCM [1,2,3,4,5,6,7,8,9,10] = 2520   No the Nos which are divisible by 2520 will be divisible by [1,2,3,4,5,6,7,8,9]   There are 3 values possible between 1000 to 9999   They are 2520 x 1= 2520   2520 x 2 = 5040   2520 x 3 = 7560   ANSWER:2520
<result>B</result>
How many 4-digit positive integers are multiple of each integer from 1 to 10