What is `(7/8xx7/8+5/6xx5/6+2xx7/8xx5/3)/(7/8xx7/8-5/6xx5/6)` equal to? `(41)/(24)` (b) `1/(24)` (c) `41` (d) None of these

7/5 xx((-3)/8) + 3/4 xx 7/5

3/4xx(7/8-5/6)+4-3/2-:7/6=

15 7/8xx 23 1/5+3 4/5xx 5 1/8=

(5)/(6)-:(6)/(7)xx?-(8)/(9)-:1(3)/(5)+(3)/(4)xx3(1)/(3)=2(7)/(9)(7)/(6)(b)(6)/(7)(c)1(d) None of these

(4.5xx3.7+4.5xx6.3)/(1.5xx8.4-1.5xx7.4)=?

The sum of the first 20 terms of the series (1)/(5xx6)+(1)/(6xx7)+(1)/(7xx8)+backslash is (a) 0.16(b)1.6c(c)16(d) None of these

12.5xx8.4xx7.6=?

(343xx49)/(216xx16xx81)=?(7^(5))/(6^(7))(b)(7^(5))/(6^(8))(c)(7^(4))/(6^(7)) (d) (7^(6))/(6^(7))(e) None of these