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- Question
3.87 - 2.59 =?
Options- A. 1.20
- B. 1.2
- C. 1.27
- D. 1.28
- Correct Answer
- 1.28
Explanation3.87 - 2.59 = (3 + 0.87) - (2 + 0.59)= ❨ 3 + 87 ❩ - ❨ 2 + 59 ❩ 99 99 = 1 + ❨ 87 - 59 ❩ 99 99 = 1 + 28 99 = 1.28.
Decimal Fraction problems
Search Results
- 1.
.009 = .01 ?
Options- A. .0009
- B. .09
- C. .9
- D. 9 Discuss
Correct Answer: .9
Explanation:
Let .009 = .01; Then x = .009 = .9 = .9 x .01 1 - 2. 0.04 x 0.0162 is equal to:
Options- A. 6.48 x 10-3
- B. 6.48 x 10-4
- C. 6.48 x 10-5
- D. 6.48 x 10-6 Discuss
Correct Answer: 6.48 x 10-4
Explanation:
4 x 162 = 648. Sum of decimal places = 6.
So, 0.04 x 0.0162 = 0.000648 = 6.48 x 10 -4- 3.
Which of the following fractions is greater than 3 and less than 5 ? 4 6
Options- A.
1 2 - B.
2 3 - C.
4 5 - D.
9 10
Discuss
Correct Answer:4 5
Explanation:
3 = 0.75, 5 = 0.833, 1 = 0.5, 2 = 0.66, 4 = 0.8, 9 = 0.9. 4 6 2 3 5 10 Clearly, 0.8 lies between 0.75 and 0.833.
∴ 4 lies between 3 and 5 . 5 4 6 - 4. 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 - 5.
(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 - 6. Which of the following are in descending order of their value?
Options- A.
1 , 2 , 3 , 4 , 5 , 6 3 5 7 5 6 7 - B.
1 , 2 , 3 , 4 , 5 , 6 3 5 5 7 6 7 - C.
1 , 2 , 3 , 4 , 5 , 6 3 5 5 6 7 7 - D.
6 , 5 , 4 , 3 , 2 , 1 7 6 5 7 5 3
Discuss
Correct Answer:6 , 5 , 4 , 3 , 2 , 1 7 6 5 7 5 3
- 7. The rational number for recurring decimal 0.125125.... is:
Options- A.
63 487 - B.
119 993 - C.
125 999 - D. None of these Discuss
Correct Answer:125 999
Explanation:
0.125125... = 0.125 = 125 999 - 8.
4.2 x 4.2 - 1.9 x 1.9 is equal to: 2.3 x 6.1
Options- A. 0.5
- B. 1.0
- C. 20
- D. 22 Discuss
Correct Answer: 1.0
Explanation:
Given Expression = (a2 - b2) = (a2 - b2) = 1. (a + b)(a - b) (a2 - b2) - 9. The price of commodity X increases by 40 paise every year, while the price of commodity Y increases by 15 paise every year. If in 2001, the price of commodity X was Rs. 4.20 and that of Y was Rs. 6.30, in which year commodity X will cost 40 paise more than the commodity Y?
Options- A. 2010
- B. 2011
- C. 2012
- D. 2013 Discuss
Correct Answer: 2011
Explanation:
Suppose commodity X will cost 40 paise more than Y after z years.Then, (4.20 + 0.40z) - (6.30 + 0.15z) = 0.40
⟹ 0.25z = 0.40 + 2.10
⟹ z = 2.50 = 250 = 10. 0.25 25 ∴ X will cost 40 paise more than Y 10 years after 2001 i.e., 2011.
- 10. 617 + 6.017 + 0.617 + 6.0017 =?
Options- A. 6.2963
- B. 62.965
- C. 629.6357
- D. None of these Discuss
Correct Answer: 629.6357
Explanation:
617.00 6.017 0.617 + 6.0017 -------- 629.6357 ---------
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