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- Question
A person was asked to state his age in years. His reply was , "Take my age 3 years hence, multiply it by 3 and subtract 3 times my age 3 years ago and you will know how old I am." What was the age of the person ?
Options- A. 18
- B. 20
- C. 24
- D. 30
- Correct Answer
- 18
ExplanationLet the present age of person be x years.
Then, 3(x + 3) - 3(x - 3 ) = x <=> (3x + 9) - (3x - 9) = x <=> x = 18..
- 1. The expression (11.98 * 11.98 + 11.98 * (x) + 0.02 * 0.02) will be a perfect square for x equal to :
Options- A. 0.01
- B. 0.02
- C. 0.03
- D. 0.04 Discuss
- 2. What is the quotient of 18/1000?
Options- A. 1.8
- B. 0.18
- C. 0.018
- D. 0.0018 Discuss
- 3. If two fractions, each of which has a value between 0 and 1, are multiplied together, the product will be :
Options- A. always greater than either of the original fractions
- B. always less than either of the original fractions
- C. sometimes greater and sometimes less than either of the original fractions
- D. remains the same Discuss
- 4. Karthik read 613 th of a book in 1st week and 59 th of the remaining book in 2nd week. If there were 100 pages unread after 2nd week, how many pages were there in the book ?
Options- A. 404
- B. 415
- C. 418
- D. 420 Discuss
- 5. 54.327 x 357.2 x 0.0057 is same as
Options- A. 5.4327 x 3.572 x5.7
- B. 5.4327 x 3.572 x0.57
- C. 54327 x 3572 x 0.0000057
- D. None of these Discuss
- 6. Which of the following are in descending order of their value?
Options- A. 5/9, 7/11, 8/15, 11/17
- B. 5/9, 8/15, 11/17, 7/11
- C. 11/17 , 7/11, 8/15, 5/9
- D. 11/17, 7/11, 5/9, 8/15 Discuss
- 7. When 52416 is divided by 312, the quotient is 168. what will be the quotient when 52.416 is divided by 0.0168?
Options- A. 3.12
- B. 312
- C. 3120
- D. None of these Discuss
- 8. (0.2 * 0.2 + 0.01) ( 0.1 * 0.1 + 0.02)^(-1) is equal to :
Options- A. 5/3
- B. 9/3
- C. 11/3
- D. 13/3 Discuss
- 9. What is the decimal conversion of 18?
Options- A. 0.375
- B. 0.247
- C. 0.214
- D. 0.125 Discuss
- 10. 125 over 1000 in Simplest Form?
Options- A. 2/9
- B. 1/8
- C. 3/8
- D. 4/7 Discuss
Decimal Fraction problems
Search Results
Correct Answer: 0.04
Explanation:
Given = (11.98)^2 + (0.02)^2 + 11.98 * x.
For the given expression to be a perfecr square, we must have
11.98 * x = 2 * 11.98 * 0.02 => x = 0.04
Correct Answer: 0.018
Correct Answer: always less than either of the original fractions
Explanation:
We can easily Answer this by taking some values.
The question states that the two fractions, each have values between 0 and 1.
Let us say one of the fraction is 1/2 and the other fraction is 1/3 .
The product of the two fractions is 1/2 x 1/3 = 1/6 .
is lesser than both 1/2 and 1/3 .
So, the correct answer is that the product is always less than either of the original fractions.
Correct Answer: 418
Explanation:
Let the total book be 1
Then, in the 1st week th of book is read
i.e remaining pages =
in 2nd week he read
th of it
i.e
Remaining pages after 2nd week =
But given remaining pages after 2nd week = 100
--> x = 418
The total pages in the book are 418
Correct Answer: 5.4327 x 3.572 x5.7
Explanation:
Number of decimal places in the given expression = 8
Number of decimal places in (A) = 8
Number of decimal places in (B) = 9
Number of decimal places in (C)= 7
Clearly , the expresssion in (A) is the same as the given Expression.
Correct Answer: 11/17, 7/11, 5/9, 8/15
Explanation:
Converting each of the given fractions into decimal form, we get
5/9 = 0.55, 7/11 = 0.63, 8/15 = 0.533, 11/17 = 0.647
Clearly, 0.647>0.63>0.55>0.533
so , 11/17 > 7/11 > 5/9 > 8/15
Correct Answer: 3120
Explanation:
Given,
Now ,
Correct Answer: 5/3
Explanation:
Given = (0.2 * 0.2 + 0.01) / ( 0.1 * 0.1 + 0.02) = (0.04 + 0.01) / (0.01 + 0.02) = 0.05 / 0.03 = 5/3...
Correct Answer: 0.125
Correct Answer: 1/8
Explanation:
125 over 1000 in Simplest Form means in its simple fraction form.
Now, to get the simplest form of 125/1000, find the HCF or GCD of both numerator and denominator i.e, 125 and 1000.
HCF of 125, 1000 = 125
Then, divide both numerator and denominator by 125
i.e,
Hence, is the simplest form of 125 over 1000.
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