Question

The greatest number of four digits which is divisible by 15 25

Answer 1

Answer:

Step-by-step explanation:

9600

Factorizing 75=3*5*5=15*5=3*25 and 8=2^3, so 75*8=600. The greatest number divisible by 15, 25, 40 and 75 will be 600*8*k=4800*k<=9999. So with k=2 we get 4800*2=9600 as the greatest number of four digits which is divisible by 15, 25, 40 and 75. 9600/75=128, 9600/40=240, 9600/25=384 and 9600/15=640.