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Quantitative Aptitude Quiz- Simplification/Approximation (Answers)

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ANSWERS

1–Option A
(5546/47+4984*0.25)/11=x
(118+1246)/11=x
x=1364/11==> 124.

2–Option B
(31/4)/(93/2) * 26/3 +23/9 = x2
13/9 + 23/9 = x2
36/9= x2
x2=4
x=2.

3-Option D
284.9*7 0.1*40.1/(7-2.5*4-2.5)
284.9*280.1/28-2.5
28 4.9+0.1+2.5==>287.5.

4–Option B
23 + 240 – 312 =  -49

5–Option E
312 – 84 = 228

6–Option B

7–Option A
294 + 448 – 210 + 234 = 766

8–Option A
43 + 56 ÷ 4 – 26 =  31

9–Option B
(0.6)5/4 ÷ (0.36)3/8 = (0.6)5/4 ÷ (0.6)2 * 3/8 = (0.6)5/4 ÷ (0.6)3/4 = (0.6)5/4 – 3/4 = (0.6)1/2
Similarly, (0.3)13/12 ÷ (0.09)7/24 = (0.3)1/2
So (0.6)1/2 × (0.3)1/2 = (0.18)1/2
So (0.18)1/2 = (0.18)1-x gives 1/2 = 1 – x, So x = ½

10–Option D

 

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