what least value should be replaced by * in 2631 * 4 so the number become divisible by 3
"explanation : trick : number is divisible by 3 , if sum of all digits is divisible by 3 , so ( 2 + 6 + 3 + 1 + * + 4 ) = 16 + * should be divisible by 9 , 16 + 2 will be divisible by 2 , so that least number is 2 . answer : option d"
subtract(4, subtract(4, 4))