`(180xx15-12xx20)/(140xx8+2xx55)=?` (a) `1/7` (b) `4/5` (c) `2` (d) 4 (e) None of these

(3.5xx1.4)/(0.7)=?( a) 0.7(b)2.4(c)3.5(d)7.1 (e) None of these

(18xx14-6xx8)/(488-:4-20)=?(1)/(2)(b)(3)/(4)(c)2(d)4(e) None of these

(0.75xx4.4xx2.4)-:0.6=?(a)4.752(b)12(c)13.2(d)15.84(e) None of these

18 3/4xx?-:6/(37)=1480 11 7/(12) (b) 11 4/5 (c) 12 5/(12) (d) 12 4/5 (e) None of these

786-:24xx?=6.55(a)0.2(b)0.4(c)4(d)5(e) None of these

(12xx19)+(13xx8)=(15xx4)+?

383xx38xx3.8=?(a)5505.2(b)56305.4 (c) 57305.6 (d) 58305.8 (e) None of these

6(5)/(6)xx5(1)/(3)+17(2)/(3)xx4(1)/(2)=?( a) 112(1)/(3) (b) 116(2)/(3)(c)240(d)663(e) None of these

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

[(84)^(2)-:28xx12]-:24=7xx?(a)15(b)17(c)19(d)21(e) None of these