If n is a positive integer less than 200 and
14n/60化简：7n/30； n 必须满足是30的倍数才可以保证14n/60是整数：所以n可以等于30 60 90 120 150 180
这些数的质因子为：2 3 5 全部都是2 3 5 那么只有3个
- Many Runagian senior citizens are no better off financially now than they were before the increase.The phrase “better off” is closest in meaning to________?
- The word "accidental" is closest in meaning to___________ ?
- Who can it be? I’ m quite ____ a loss to guess．
- The number of people flying first class on domestic flights rose sharply in 1990, doubling the increase of the previous year.
- The word "conspicuous" is closest in meaning to______ ?