the least number of 4 digits which is divisible by 15 , 25 , 40 and 75 is :  Choose the correct option.
A) 9000
B) 9400
C) 9600
D) 9800
E) 9700

Rationale: greatest number of 4 digits is 9999 . l . c . m of 15 , 25 , 40 and 75 is 600 . on dividing 9999 by 600 , the remainder is 399 . required number = 9999 - 399 = 9600 answer : c
Answer: C