What is the sum of213,857?

Ling listed all of the factors of a mystery number: 1,2,4,8,16,32 what is the mystery number?

The pyramid below was dissected by a horizontal plane which shape describes the pyramid horizontal cross section

Circle d circumscribes abc and abe. which statements about the triangles are true? statement i: the perpendicular bisectors of abc intersect at the same point as those of abe. statement ii: the distance from c to d is the same as the distance from d to e. statement iii: bisects cde. statement iv: the angle bisectors of abc intersect at the same point as those of abe. a. i only b. i and ii c. ii and iv d. i and iii e. iii and iv