1. what is the greatest perfect square that is a factor of 7!?

2. A standard six-sided die with its faces numbered 1-6 is rolled once, and a dime is tossed twice, Whats the probability of rolling a number less then 3 and tossing a tail? exspress ur answer as a common fraction

i know this one is easy i got 2/6 and 1/2 but am i supposed to make it one answer or is that my answer?

3. When converted to be in the same unit of measure, what is the ratio of 4cm to 1km? Exspress ur answer as a common fraction?

4. In 30 years Sue will be 4 times as old as she is now. how old is she now?