James street, qb 1968-69, led texas to the national championship in 1969. his 20 straight victories as a starter are still the best in swc history. how many significant digits does 20 represent?

One significant number.

Step-by-step explanation:

If a number doesn't contain decimal then we should always follow the rules to find the significant digits.

1). Leading zeros doesn't count.

2). All non zero numbers and zeros between the non zero numbers will be counted as significant digits.

3). Trailing zeros will not be counted if there is no decimal after the zeros.

In this question,

20 has one significant number because after 2 (non zero number) 0 will not be counted as significant number [By rule number (3)]

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step-by-step explanation: