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- Question
- The HCF and LCM of two number are 21 and 4641, respectively. If one of the numbers lies between 200 and 300, then find the two numbers.
Options- A. 273, 363
- B. 273, 359
- C. 273, 361
- D. 273, 357
- Correct Answer
- 273, 357
ExplanationLet the numbers be 21a and 21b, where a and b are co-primes.
Then, 21a x 21b = (21 x 4641)
? ab = 221
Two co-primes with product 221 are 13 and 17.
? Required number = (21 x 13, 21 x 17)
= (273, 357) - 1. 56.001 x? - 1000.999 = 231
Options- A. 22
- B. 45
- C. 37
- D. 16 Discuss
- 2. 1205 ÷ 2.5 =?
Options- A. 3000
- B. 4800
- C. 300
- D. 480 Discuss
- 3. 4182.395 ÷ 20.886 =?
Options- A. 300
- B. 200
- C. 150
- D. 250 Discuss
- 4. 98743 ÷ 198 = 800 -?
Options- A. 200
- B. 250
- C. 300
- D. 350 Discuss
- 5. 425 ÷ 16.95 x? = 225
Options- A. 11
- B. 0.8
- C. 9
- D. 19 Discuss
- 6. 137% of 12345 =?
Options- A. 17000
- B. 15000
- C. 1500
- D. 14300 Discuss
- 7. [137 ÷ 17 x 3.99]/[4.02 x 3.98] =?
Options- A. 3.2
- B. 3.5
- C. 2.5
- D. 2 Discuss
- 8. 5454 ÷ 54 ÷ 5 =?
Options- A. 15
- B. 25
- C. 30
- D. 20 Discuss
- 9. 161% 3578 + 139.85 + 5/8 of 161. 56 =?
Options- A. 6000
- B. 6500
- C. 6700
- D. 5500 Discuss
- 10. ? 625.04 x 16.96 + 136.001 ÷ 17 =?
Options- A. 4.18
- B. 4.41
- C. 425
- D. 433 Discuss
More questions
Correct Answer: 22
Explanation:
56.001 x ? - 1000.999 = 231
? 56 x ? - 1001 = 231
? 56 x ? = 231 +1001 = 1232/56 = 22
Correct Answer: 480
Explanation:
1205 ÷ 2.5 = 482 ? 480
Correct Answer: 200
Explanation:
? = 4182.395 / 20.886 = 200.24873 = 200
Correct Answer: 300
Explanation:
98743 ÷ 198 = 800 - ?
? ? = 800 - 98743/198 = 301.298 ? 300
Correct Answer: 9
Explanation:
425 ÷ 16.95 x ? = 225
? ? ? (225 x 17) / 425 = 9
Correct Answer: 17000
Explanation:
137% of 12345 = ?
? ? = 12345 x 137/100 = 16912.65 ? 17000
Correct Answer: 2
Explanation:
[137 ÷ 17 x 3.99]/[4.02 x 3.98] = ? ? (137 ÷ 17 x 4) / (4 x 4) ? 2
Correct Answer: 20
Explanation:
? = 5454 ÷ 54 ÷ 5
= 5454/(54 x 5) = 5454/270 = 20.2 ? 20
Correct Answer: 6000
Explanation:
? = 161% of 3578 + 139.85 + 5/8 of 161.56
= 5760.58 + 139 .85 + 100.975
6001.405 ? 6000
Correct Answer: 433
Explanation:
?625.04 x 16.96 +136.001 ÷ 17 = ?
? ? = ?625 x 17 + 136 ÷ 17
= 25 x 17 + 136 ÷ 17
= 425 + 8 = 433
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