what is the least number which when divided by 6 , 9 , 12 and 18 leaves remainder 4 in each care ?
"explanation : lcm of 6 , 9 , 12 and 18 is 36 required number = 36 + 4 = 40 answer : option b"
add(lcm(lcm(6, 9), lcm(12, 18)), 4)