Solve `2. 5xx4. 8+7. 2xx1. 5-1. 2xx14=?` (a) 1.2 (b) 6.5 (c) 4 (d) 4.8 (e) 6

(4. 2xx4. 2-1. 9xx1. 9)/(2. 3xx6. 1)=? (a) 0.5 (b) 1 (c) 1.9 (d) 4.2

Solve 48. 2xx2. 5xx2. 2+?=270 (a) 6.5 (b) 2.8 (c) 4.9 (d) 3.4 (e) 1.2

Solve (294-:14xx5+11)/(?)=8^(2)-:5+1.7 (a) 8 (b) 6 (c) 12 (d) 5 (e) 10

(5xx1.6-2xx1.4)/(1.4(d)4^(1.3))=?( a) 0.4(b)1.2 (c)

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

Calculate the following a. (6.7 xx 10^(5)) xx (4.6 xx 10^(4)) b. (7.6 xx 10^(7)) xx (3.8 xx 10^(-4)) c. (6.8 xx 10^(-3)) xx (5.2 xx 10^(-4)) d. (6.7 xx 10^(5)) / (4.6 xx 10^(4)) e. (7.6 xx 10^(7)) / (3.8 xx 10^(-4)) f. (6.8 xx 10^(-3)) / (3.8 xx 10^(-4)) g. 7.65 xx 10^(2) + 2.72 xx 10^(3) h. 7.87 xx 10^(-4) - 2.61 xx 10^(-5)

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

The value of ((1.5)^3 + (4.7)^3 + (3.8)^3 - 3 xx 1.5 xx 4.7 xx 3.8)/((1.5)^2 + (4.7)^2 + (3.8)^2 - (1.5 xx 4.7) - (4.7xx 3.8) - (1.5 xx 3.8)) is :

The product 3 1/7xx1 5/6xx1 2/5xx1 1/(11) is equal to 5 8/5 (b) 5 4/5 . 8 4/5 (d) 4 4/5

1/2xx 5/4 + 6/8 xx 10/9