Discussion
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- Question
The least among the following is:
Options- A. 0.2
- B. 1 ? 0.2
- C. 0.2
- D. (0.2)2
- Correct Answer
- (0.2)2
Explanation1 ? 0.2 = 1 = 10 = 5; 0.2 2 0.2 = 0.222...;
(0.2)2 = 0.04.
0.04 < 0.2 < 0.22....<5.
Since 0.04 is the least, so (0.2)2 is the least.
Decimal Fraction problems
Search Results
- 1. When 0.232323..... is converted into a fraction, then the result is:
Options- A.
1 5 - B.
2 9 - C.
23 99 - D.
23 100
Discuss
Correct Answer:23 99
Explanation:
0.232323... = 0.23 = 23 99 - 2. The expression (11.98 x 11.98 + 11.98 x x + 0.02 x 0.02) will be a perfect square for x equal to:
Options- A. 0.02
- B. 0.2
- C. 0.04
- D. 0.4 Discuss
Correct Answer: 0.04
Explanation:
Given expression = (11.98)2 + (0.02)2 + 11.98 x x.For the given expression to be a perfect square, we must have
11.98 x x = 2 x 11.98 x 0.02 or x = 0.04
- 3.
The value of 489.1375 x 0.0483 x 1.956 is closest to: 0.0873 x 92.581 x 99.749
Options- A. 0.006
- B. 0.06
- C. 0.6
- D. 6 Discuss
Correct Answer: 0.06
Explanation:
489.1375 x 0.0483 x 1.956 ≈ 489 x 0.05 x 2 0.0873 x 92.581 x 99.749 0.09 x 93 x 100 = 489 9 x 93 x 10 = 163 x 1 279 10 = 0.58 10 = 0.058 ≈ 0.06.
- 4.
5 x 1.6 - 2 x 1.4 =? 1.3
Options- A. 0.4
- B. 1.2
- C. 1.4
- D. 4 Discuss
Correct Answer: 4
Explanation:
Given Expression = 8 - 2.8 = 5.2 = 52 = 4. 1.3 1.3 13 - 5. 3889 + 12.952 -? = 3854.002
Options- A. 47.095
- B. 47.752
- C. 47.932
- D. 47.95 Discuss
Correct Answer: 47.95
Explanation:
Let 3889 + 12.952 - x = 3854.002.Then x = (3889 + 12.952) - 3854.002
= 3901.952 - 3854.002
= 47.95.
- 6. What decimal of an hour is a second?
Options- A. .0025
- B. .0256
- C. .00027
- D. .000126 Discuss
Correct Answer: .00027
Explanation:
Required decimal = 1 = 1 = .00027 60 x 60 3600 - 7.
0.0203 x 2.92 =? 0.0073 x 14.5 x 0.7
Options- A. 0.8
- B. 1.45
- C. 2.40
- D. 3.25 Discuss
Correct Answer: 0.8
Explanation:
0.0203 x 2.92 = 203 x 292 = 4 = 0.8 0.0073 x 14.5 x 0.7 73 x 145 x 7 5 - 8. 0.002 x 0.5 =?
Options- A. 0.0001
- B. 0.001
- C. 0.01
- D. 0.1 Discuss
Correct Answer: 0.001
Explanation:
2 x 5 = 10.Sum of decimal places = 4
∴ 0.002 x 0.5 = 0.001
- 9.
(0.1667)(0.8333)(0.3333) is approximately equal to: (0.2222)(0.6667)(0.1250)
Options- A. 2
- B. 2.40
- C. 2.43
- D. 2.50 Discuss
Correct Answer: 2.50
Explanation:
Given expression = (0.3333) x (0.1667)(0.8333) (0.2222) (0.6667)(0.1250) = 3333 x 1 x 5 6 6 2222 2 x 125 3 1000 = ❨ 3 x 1 x 5 x 3 x 8 ❩ 2 6 6 2 = 5 2 = 2.50 - 10. The correct expression of 6.46 in the fractional form is:
Options- A.
646 99 - B.
64640 1000 - C.
640 100 - D.
640 99
Discuss
Correct Answer:640 99
Explanation:
6.46 = 6 + 0.46 = 6 + 46 = 594 + 46 = 640 . 99 99 99
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