`(532)/(648)xx(432)/(588)=?` `2/(21)` (b) `(38)/(63)` (c) `(21)/(64)` (d) `(19)/(21)` (e) None of these

Solve (21.5)/(5)+(21)/(6)-(13.5)/(15)=(((?)^((1)/(3)))/(4))+(17)/(30) (a) 2( b) 8( c) 512 (d) 324 (e) None of these

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

(3)/(5) of (4)/(7) of (5)/(9) of (21)/(24) of 504=?( a) 63 (b) 69 (c) 96 (d) 109 (e) None of these

(14)/(19)xx(57)/(70)xx(20)/(21)=?

If A+B=[(1,0),(1,1)] and A-2B=[(-1,1),(0,-1)] then A= (A) 1/3 [(1,1),(2,1)] (B) 1/3 [(2,1),(1,2)] (C) [(1,1),(2,1)] (D) none of these

Which part contains the fractions in ascending order? (11)/(14),(16)/(19),(19)/(21) (b) (16)/(19),(11)/(14),(19)/(21) (c) (16)/(19),(19)/(21),(11)/(14) (d) (19)/(21),(11)/(14),(16)/(19)

a=23(529)(1024) , b=21(441)(144) , c=19(361)(?)

29.92xx2.4+21.28xx4.5=?( a) 167.568 (b) 167.658 (c) 176.56 (d) 176.658 (e) None of these

The value of cot sum_(n=1)^(19)(cot^(-1)(1+sum_(p=1)^(n)2p)) is equal to (a) (21)/(19) (b) (19)/(21) (c) -(19)/(21) (d) -(21)/(19)