the least number which when increased by 7 each divisible by each one of 24 , 32 , 36 and 54 is :
"solution required number = ( l . c . m . of 24 , 32 , 36 , 54 ) - 7 = 864 - 7 = 857 . answer a"
subtract(lcm(lcm(lcm(24, 32), 36), 54), 7)