How many ways can a combined 4 be rolled with two standard dice?

The length of the line segment joining the midpoints of sides ab and bc of the parallelogram abcd is 10. find the length of diagnol ac

Solve this riddle: i am an odd number. i an less than 100. the some of my digit is 12. i am a multiple of 15. what number am i?

What is the distance from zero if a quadratic function has a line of symmetry at x=-3 and a zero at 4