The product of number and 1 is always
- The product of any number and 1 is always
- The product of any number and 1 is always zero
- The product of a number and 1 is always dash
- The product of any number and 1 is always one
- The product of any number and 1 is always dash
- The product of number and its reciprocal is always 1
- The product of any integer and 1 is always
- The product of 1 and the whole number is always
- The product of 1 and the whole number is always dash
- The product of a number and its opposite is always 1
- The product of a number (n-1) and the number (n+1) is always equal to
- The product of a rational number and its reciprocal is always 1