if you multiply all the numbers on your mobile phone except 0 , what is the answer ?
"we have to multiply 1 to 9 to find the answer . therefore 1 * 2 * 3 * 4 * 5 * 6 * 7 * 8 * 9 = 362880 answer is b"
multiply(const_1, subtract(const_1, const_1))