In how many ways can you arrange the letters A, B, C and D  

Seven meetings J, K, L, M, N, O and P are to be scheduled, one on each day of a week that begins on 

Sunday. The meetings are to be scheduled according to the following conditions: 

• Meeting J must take place on Sunday. 
• Meeting K must take place after both meeting L and meeting M. 
• Meeting N, O and P must take place on three consecutive days, not necessarily in that order.