Just only do question 21

digits to its right to U. (For example, an analogous system that uses three digits would begin with 000, 100, 110, 111, 200, 210, 211, 220, 221, 222, 300, . . ..) Compute the decimal representation of the number that Reimu would write as 98765. 21. For positive integers 2 - 2, 3, . . . , 2020, let ai V312 + 21 - 1 Let 12, . . ., T2020 be positive reals such that r + 3 + + 2020 - - - 1010-2020-2021 Let S be the maximum possible value of 2020 Lar.(va. - 2 2.25 14) and let in be the smallest positive integer such that S" is rational. When S' is written as a fraction in lowest terms, let its denominator be pf'p,? integers oz. Compute pia + p202 + - - - + PROF. P2 - Pk pok for prime numbers pi