HCF and LCM Aptitude Questions Practice Question and Answer
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Q: Two numbers are in the ratio 3 : 5 and their HCF is 20. Their LCM is
1650 0606c41e9affa2d5265b50eeb
606c41e9affa2d5265b50eeb- 160false
- 2300true
- 330false
- 410false
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Answer : 2. "300"
Q: The sum of the HCF and LCM of two numbers is 680 and the LCM is 84 times the HCF. If one of the numbers is 56, the other is :
1645 05ffeb30e4426b26e3e5a54c2
5ffeb30e4426b26e3e5a54c2- 184false
- 212false
- 38false
- 496true
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Answer : 4. "96"
Q: The least number, which is a perfect square and is divisible by each of the numbers 16, 20 and 24 is
1620 05f07fe11bc929f40b0b9d578
5f07fe11bc929f40b0b9d578- 16400false
- 214400false
- 31600false
- 43600true
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Answer : 4. "3600 "
Q: Two numbers are in the ratio 3: 4 if their LCM is 240 then smaller number will be
1619 060363d7be62cee4356730393
60363d7be62cee4356730393- 1100false
- 280false
- 360true
- 450false
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Answer : 3. "60"
Q: If (x + k ) is the common factor of x2 + ax + b and x2 + cx + d , then what is k equal to ?
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60112f43178b94051cea1156- 1$$ {(d-b)\over {(c-a)}}$$true
- 2$$ {(d-b)\over {(a-c)}}$$false
- 3$$ {(d+b)\over {(c+a)}}$$false
- 4$$ {(d-b)\over {(c+a)}}$$false
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Answer : 1. "$$ {(d-b)\over {(c-a)}}$$"
Q: The product of two numbers is 2028 and their HCF is 13. The number of such pair is-
1614 0608f95128899c91069dac6c9
608f95128899c91069dac6c9- 11false
- 22true
- 33false
- 44false
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Answer : 2. "2"
Q: What is the HCF of 16, 72 and 28 ?
1609 0608293d05027727e2faacb45
608293d05027727e2faacb45- 13false
- 24true
- 32false
- 41false
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Answer : 2. "4"
Q: If the product of two numbers is 4941 and their LCM is 81, then their HCF is:
1607 0606aef31556643278a72811e
606aef31556643278a72811e- 159false
- 260false
- 335false
- 461true
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Answer : 4. "61"
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