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- Question
- If the three-four of a number is subtracted from the number, the value so obtained is 163.What is the number?
Options- A. 625
- B. 562
- C. 632
- D. 652
- Correct Answer
- 652
ExplanationLet the number be N.
According to the question,
N - (N x 3/4) =163
? N/4 =163
? N=652 - 1. If x/y =3/4, then the value of [6/7 + (y - x) / (y + x)] equals?
Options- A. 5/7
- B. 11/7
- C. 1
- D. 2 Discuss
- 2. 62976 ÷? = 123
Options- A. 412
- B. 502
- C. 512
- D. 522 Discuss
- 3. 4050/? ? = 450?
Options- A. 49
- B. 100
- C. 81
- D. 9 Discuss
- 4. What value should come in place of the question mark(?) in the following question?
√ ? /19 = 4?
Options- A. 76
- B. 5776
- C. 304
- D. 1296 Discuss
- 5. A students was asked to multiply a number by 3/2 but he divided that number by 3/2. His result was therefore 10 less than the correct answer. Find the number?
Options- A. 10
- B. 12
- C. 15
- D. 20 Discuss
- 6. The positive number, when increased by 10 equals 200 times its reciprocal. What is the number?
Options- A. 100
- B. 10
- C. 20
- D. 200 Discuss
- 7. A man has given one -fourth part of his property to his daughter half part to his sons and one fifth part given as charity. How much part of his his property he has given?
Options- A. 1/20
- B. 19/20
- C. 1/10
- D. 9/10 Discuss
- 8. The sum of two number is 10 Their product is 20. Find the sum of the reciprocals of the two numbers.
Options- A. 1
- B. 3/5
- C. 1/2
- D. 11/6 Discuss
- 9. A chocolate has 12 equal to pieces Manju gave 1/4 th of it to anju 1/3 th of it to raj and 1/6 th of to fiza The number of pieces of chocolate left with manju is
Options- A. 1
- B. 2
- C. 3
- D. 4 Discuss
- 10. How many factors does 120 contains?
Options- A. 3
- B. 10
- C. 12
- D. 16 Discuss
Number System problems
Search Results
Correct Answer: 1
Explanation:
Given Exp. = 6/7 + [(y - x)/(y + x)]
= 6/7 + [1 - (x/y) / 1 + (x/y)]
= 6/7 + [1 - (3/4)] / [1 + (3/4)]
= 6/7 + 1/7 =1.
Correct Answer: 512
Explanation:
Let 62976/N = 123
Then N = 62976 / 123 = 512.
Correct Answer: 81
Explanation:
Let 4050/?N = 450
Then ?N = 4050/450 = 9
? N = (9 x 9) = 81.
Correct Answer: 5776
Explanation:
Let √N/19 = 4
Then √N = 19 x 4 = 76
∴ N = 76 x 76 = 5776.
Correct Answer: 12
Explanation:
Let the number be N.
According to the question,
(N x 3)/2 - N / (3/2) = 10
? 3N/2 - 2N/3 = 10
? (9N - 4N) / 6 = 10
? 5N / 6 = 10
? N = (10 x 6)/5 = 12
Correct Answer: 10
Explanation:
Let the positive number be N.
According to the question,
N + 10 = 200 / N
? N2 + 10N = 200
? N2 +10N - 200 =0
? (N - 10)(N + 20) = 0
? N = 10 & N= -20
But N not equal to -20 since N is a positive number
So, the required number is 10
Correct Answer: 19/20
Explanation:
Total share given by the person = (1/4) + (1/2) + (1/5)
= (5 + 10 + 4) / 20
=19/20
Correct Answer: 1/2
Explanation:
Let the number be a and b Then
a + b = 10 ..........(i)
ab = 20 ........(ii)
Sum of reciprocal = 1/a + 1/b
= (a + b) / ab
= 10/20
= 1/2
Correct Answer: 3
Explanation:
the number of pieces of chocolate left with manju =1- [(1/4) + (1/3) + (1/6)]
= 1 - [ (3 + 4 + 2)/12)
= 1 - (9/12)
= 3/12
Hence number of piece of chocolate left with in manju is 3
Correct Answer: 16
Explanation:
Factors of composite number = (P1 +1)(P2+1)(P3+1)......(Pn+1).
Where P1,P2,P3... Pn are the powers of respective prime factors.
So,
120= 23 x 31 x 51
Factors=(3+1)(1+1)(1+1)=16.
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