`((147xx147+147xx143+143xx143)/(147xx147xx147-143xx143xx143))=?` `1/4` (b) `290` (c) `1/(290)` (d) 4

Evaluate: ((0. 43) ^(3) + (1. 47) ^(3) + (1.1) ^(3) - 3 xx 0. 43 xx 1 . 47 xx 1.1)/(( ( 0. 43) ^(2) + (1. 47) ^(2) + (1.1) ^(2) -0. 43 xx 1. 43)- 0. 43 xx 1.1 - 1.47 xx 1.1)

Find each of the following products: (a) 3 xx (-1) (b) (-1) xx 225 (c) (-21) xx (-30) (d) (-316) xx (-1) (e) (-15 xx 0 xx (-18) (f) (-12) xx (-11) xx (10) (g) 9 xx (-3) xx (-6) (h) (-18) xx (-5) xx (-4) (i) (-1) xx (-2) xx (-3) xx 4 (j) (-3) xx (-6) xx (-2) xx (-1)

Perform the following multiplication a) 2/9 xx 7/8 xx 1/9 b) 1/3 xx 4/5 xx 1/4 c) 1/3 xx 2/4 xx 5/3 d) 1/2 xx 1/3 xx 1/4 e) 1/5 xx 2/5 xx 2/3 f) 2/3 xx 5/6 xx 1/4

Find the value of: (i) (82)^(2) - (18)^(2) (ii) (128)^(2) - (72)^(2) (iii) 197 xx 203 (iv) (198 xx 198 - 102 xx 102)/(96) (v) (14.7 xx 15.3) (vi) (8.63)^(2) - (1.37)^(2)

If sqrt(.04xx.4xx a)=.004xx.4xx sqrt(b), then (a)/(b) is 16xx10^(-3)(b)16xx10^(-4)(c)16xx10^(-5) (d) None of these

4.4xx5.8xx11.5-141.27=?( a) 121.17 (b) 147.51 (c) 152.21 (d) 187.95 (e) None of these