what will be the reminder when ( 19 ^ 19 + 19 ) is divided by 20 ?
"( x ^ n + 1 ) will be divisible by ( x + 1 ) only when n is odd ; ( 19 ^ 19 + 1 ) will be divisible by ( 19 + 1 ) ; ( 19 ^ 19 + 1 ) + 18 when divided by 20 will give 18 as remainder . correct option : a"
subtract(add(power(19, 19), 19), multiply(20, floor(divide(add(power(19, 19), 19), 20))))