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- Question
- 10 / 11 =110 /?
Options- A. 111
- B. 1100
- C. 121
- D. 100
- Correct Answer
- 121
ExplanationLet 10/11 = 110/N,
Then, 10N = 11 x 110
? N = (11 x 110) /10 = 121. - 1. The first prime number is?
Options- A. 0
- B. 1
- C. 2
- D. 3 Discuss
- 2. The sum of first four prime numbers is?
Options- A. 10
- B. 11
- C. 16
- D. 17 Discuss
- 3. 392/? ? = 28
Options- A. 144
- B. 196
- C. 24
- D. 48 Discuss
- 4. What least number must be subtracted from 13601 to get a number exactly divisible by 87?
Options- A. 49
- B. 23
- C. 29
- D. 31 Discuss
- 5. Which number should replace both the asterisks in (* /21) x (*/189) = 1?
Options- A. 21
- B. 63
- C. 3969
- D. 147 Discuss
- 6. The largest natural number by which the product of three consecutive even naturals is always divisible, is?
Options- A. 16
- B. 24
- C. 48
- D. 96 Discuss
- 7. In a division sum, the divisor is 12 times the quotient and 5 times the remainder . If the remainder be 48 then the dividend is?
Options- A. 240
- B. 576
- C. 4800
- D. 4848 Discuss
- 8. If a number is multiplied by three-forth of itself. The value thus obtained is 10800. What is that number?
Options- A. 210
- B. 180
- C. 120
- D. 160 Discuss
- 9. The product of two consecutive odd numbers is 19043. Which is the smaller one?
Options- A. 137
- B. 131
- C. 133
- D. 129 Discuss
- 10. If the three- fourth of number is subtracted from the number, the value so obtained is 163. What is that number?
Options- A. 625
- B. 562
- C. 632
- D. 652 Discuss
Number System problems
Search Results
Correct Answer: 2
Explanation:
The first prime number is 2.
Correct Answer: 17
Explanation:
First four prime numbers are 2,3,5,7,
Their sum = (2 + 3 + 5 + 7) = 17.
Correct Answer: 196
Explanation:
Let 392/?x = 28
Then ?x = 392/28 =14
? x = 142 = 196
Correct Answer: 29
Explanation:
On dividing 13601 by 86, we get 29 as remainder
? Required number to be subtracted = 29.
Correct Answer: 63
Explanation:
Let (y/21) x (y/189) = 1
Then , y2 = 21 x 189 = 21 x 21 x 9
? y = (21 x 3) = 63 .
Correct Answer: 48
Explanation:
Required number is 2 x 4 x 6 = 48.
Correct Answer: 4848
Explanation:
Let quotient = Q and remainder = R
Then, Divisor = 12 Q =5 R
Now, R = 48
? 12Q = 5 x 48
? Q = 20
Dividend = Divisor x Quotient + Remainder
? dividend = ( 20 x 240 + 48 )
= 4848
Correct Answer: 120
Explanation:
Let the number be N
According to the question N x ( N x 3)/4 = 10800
? 3N2 / 4 = 10800
? N2 = (10800 x 4) / 3= 14400
N = ?14400 = 120
Correct Answer: 137
Explanation:
Let the two consecutive numbers are N and N+2
According to the question
N (N + 2) = 19043
? N2 + 2N - 19043 = 0
? N2 + 139N - 137N - 19043= 0
? N( N + 139) - 137 ( N - 137 ) = 0
? N( N + 139) ( N - 137) = 0
? N = 137 and N = - 139
? N = 137
Correct Answer: 652
Explanation:
Let the number be N
According to the question
N - 3N/4 = 163
? N/4 = 163
? N = 652
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