what is the greatest number of 4 digits which is divisible by 15 , 25 , 40 and 75 ?	Select the correct option:
A) 9800	B) 9600	C) 9400	D) 9500	E) 9200

Rationale: greatest number of four digits = 9999 lcm of 15 , 25 , 40 and 75 = 600 9999 ÷ 600 = 16 , remainder = 399 hence , greatest number of four digits which is divisible by 15 , 25 , 40 and 75 = 9999 - 399 = 9600 answer : b
Answer: B