Joe Root his first golden duck in his ODI career. The 5th ODI was better for Root as he scored a quick 21 before being bowled and also took the wicket of George Bailey. England lost the series 2–1 and Root finished the series with 36 runs and 1 wicket. Root was selected for the 2013-14 Ashes series. He was selected at number 6 for the first Test as Michael Carberry was given the opening batsman role alongside Alastair Cook. Root only managed 2 runs from 7 balls in the first innings before being caught off a Mitchell Johnson delivery. In the
Triangular number 4 years would lose of its "losable" value in the first year, in the second, in the third, and in the fourth, accumulating a total depreciation of (the whole) of the losable value. By analogy with the square root of , one can define the (positive) triangular root of as the number such that : which follows immediately from the quadratic formula. So an integer is triangular if and only if is a square. Equivalently, if the positive triangular root of is an integer, then is the th triangular number. Triangular number A triangular number or triangle number counts objects