Let 3420 / 19 = (y / 0.01) x 7
Then , y = ( 3420 / 19) x (0.01 / 7)
= 180 / 700
= 9/35
Let (17.28 / y) / (3.6 x 0.2) = 200
Then,17.28 / y = 200 x 3.6 x 0.2
? y = 17.28 / (200 x 3.6 x 0.2)
= 1728 / 200 x 36 x 2
= 0.12.
Let Y = 0.15 / (0.5 / 15)
= (15/100) / [(5/100) / 15)
= 4.5
Let (20 + 8 x 0.5) / ( 20 - y) =12
Then, 24 =12 x (20 - y)
? 12y = 216
? y = 18
1 / .003718 = 10000 / 3.718
= 10000 x ( 1/3.718)
= 10000 x .2689
= 2689.
Given expression 280.5 / 25.5 = 2805 / 255
= 2805 / (2.55 x 100)
= 1100 / 100
=11
Given expression = 8.32 x 0.999
= 8.32 x (1-0.001)
= 8.32 - 8.32 x 0.001
=8.32 - .00832
= 8.31168.
Given expression = a2 -2ab + b2 Where a =9.75 and b=5.75
= (a-b)2
= (9.75 - 5.75)2
= 42
=16
(0.04)3 = 0.04 x 0.04 x 0.04
= 0.000064
47/10000 = .0047
? 0.527 x 2.013 = 1.060851
Hence, the required number = 1.060851 - 1
= 0.060851.
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