Given a collection of m-bit binary strings s1 , s2 , . . . , sn , and a nonnegative integer K, the String Sum decision problem is to decide if there are K strings si1 , si2 , . . . , siK from the collection such thatsi1 + si2 + · · · + siK = 1,where the addition is bitwise Boolean-algebra addition (e. g. 1001 + 1010 = 1011), and 1 is the m-bit binary string consisting of all ones.
Prove that String Sum is an NP-complete decision problem.

You purchased 8 pounds 10 ounces of candy from a candy shop. you want to split it equally among 3 classrooms at a local school.

Which expression will have the same sum as 3_8 + 1/4?

Use the following statements to write a compound statement for the conjunction or disjunction. then find its truth value. p: an isosceles triangle has two congruent sides. q: a right angle measures 90° r: four points are always coplanar. s: a decagon has 12 sides. a) a right angle measures 90° or an isosceles triangle has two congruent sides; true. b) a right angle measures 90° and an isosceles triangle has two congruent sides; true. c) a right angle measures 90° and an isosceles triangle does not have two congruent sides; false. d) a right angle measures 90° or an isosceles triangle does not have two congruent sides; true.