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- Question
The ratio of two numbers is 3 : 4 and their H.C.F. is 4. Their L.C.M. is:
Options- A. 12
- B. 16
- C. 24
- D. 48
- Correct Answer
- 48
Explanation
Let the numbers be 3 x and 4 x . Then, their H.C.F. = x . So, x = 4.So, the numbers 12 and 16.
L.C.M. of 12 and 16 = 48.
- 1. (1000)9? 1024 =?
Options- A. 10000
- B. 1000
- C. 100
- D. 10
- E. None of these Discuss
- 2. What should be subtracted from the multiplication of 0.527 and 2.013 to get 1?
Options- A. 0.060851
- B. 2.060851
- C. 0.939085
- D. 1.9339085 Discuss
- 3. (112 x 54) =?
Options- A. 67000
- B. 70000
- C. 76500
- D. 77200 Discuss
- 4. By how much is 12% of 24.2 more than 10% of 14.2?
Options- A. 0.1484
- B. 14.84
- C. 1.484
- D. 2.762 Discuss
- 5. 587 x 999 =?
Options- A. 586413
- B. 587523
- C. 614823
- D. 615173 Discuss
- 6. 3.5 + 21 x 1.3 =?
Options- A. 7.28
- B. 6.13
- C. 72.8
- D. none of these Discuss
- 7. (51+ 52 + 53 + ... + 100) =?
Options- A. 2525
- B. 2975
- C. 3225
- D. 3775 Discuss
- 8. What decimal fraction is 40 ml of a litre?
Options- A. .4
- B. .04
- C. .05
- D. None of these Discuss
- 9. 4500 x? = 3375
Options- A. 2⁄5
- B. 3⁄4
- C. 1⁄4
- D. 3⁄5
- E. None of these Discuss
- 10. If the cost of three dozens mangoes is Rs. 245, what will be the approximate cost of 363 mangoes?
Options- A. Rs. 2200
- B. Rs. 2000
- C. Rs. 2400
- D. Rs. 2600 Discuss
More questions
Correct Answer: 1000
Explanation:
| Given Exp. = | (1000)9 | = | (103)9 | = | (10)27 | = 10(27-24) = 103 = 1000 |
| 1024 | 1024 | 1024 |
Correct Answer: 0.060851
Explanation:
? 0.527 x 2.013 = 1.060851
Hence, the required number = 1.060851 - 1
= 0.060851.
Correct Answer: 70000
Explanation:
| (112 x 54) = 112 x | ❨ | 10 | ❩ | 4 | = | 112 x 104 | = | 1120000 | = 70000 |
| 2 | 24 | 16 |
Correct Answer: 1.484
Explanation:
Required difference = (12 x 24.2) / 100 - (10 x 14.2) / 100
= 2.904 -1.42
= 1.484.
Correct Answer: 586413
Explanation:
| 587 x 999 | = 587 x (1000 - 1) |
| = 587 x 1000 - 587 x 1 | |
| = 587000 - 587 | |
| = 586413. |
Correct Answer: none of these
Explanation:
Given Expression = 3.5 + 21 x 1.3
= 3.5 + 27.3
= 30.8
Correct Answer: 3775
Explanation:
This is an A.P. in which a = 51, l = 100 and n = 50.
| ∴Sum = | n | (a + l) | = | 50 | x (51 + 100) = (25 x 151) = 3775. |
| 2 | 2 |
Correct Answer: .04
Explanation:
Required fraction = 40/1000
= 4/100
= .04
Correct Answer: 3⁄4
Explanation:
| 4500 x x = 3375 ⟹ x = | = | 3 | |
| 4 |
Correct Answer: Rs. 2400
Explanation:
? Three dozen = 3 x 12 = 36
? The cost if 1 mango = Rs. 245 / 36
? The cost of 363 mangoes = Rs. (245 / 36) x 363
= Rs. 2470.42
= Rs. 2400. (Approximately)
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