what is the least number which when divided by 7 , 9 , 12 and 18 leaves remainder 4 in each care ?
"explanation : lcm of 7 , 9 , 12 and 18 is 252 required number = 252 + 4 = 256 answer : option d"
add(lcm(lcm(7, 9), lcm(12, 18)), 4)