In mathematical operations, the last term of the ratio cannot be 0, because the last term of the ratio is equivalent to the denominator, and 0 cannot be the denominator, so the last term of the ratio cannot be 0. The score in life is not a proportional relationship, but a simple expression of the score, so it cannot be confused with the ratio in mathematics.

Whether the last term of the ratio is 0 can be explained by division and fraction. The divisor of division cannot be 0, and the denominator of fraction cannot be 0, so the last term of ratio cannot be 0.

Ratio is a quantitative relationship, just like division and fraction, but division is an operation and fraction is a number, which is their difference. The ratio consists of two numbers, the first number is called the former item, the second number is called the latter item, and the middle is connected by ":",and the latter item cannot be 0.

Extended data:

Comparison is a division formula consisting of the former item and the latter item, except that "∫" (division symbol) is changed to ":"(comparison symbol), but the division formula represents an operation, and the ratio represents the relationship between two numbers. A fractional line similar to a fraction.

For example, for example, 6÷4 writes 6:4 as a ratio. ":"is a comparative symbol, pronounced "than". The number before the comparison symbol is called the first item of comparison, and the number after the comparison symbol is called the last item of comparison. In this example, 6 is the first term of this ratio and 4 is the last term of this ratio.

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