HCF and LCM Practice Question and Answer
8 Q: If the product of three consecutive numbers is 210 then sum of the smaller number is:
925 05f0823018e448621429eabd3
5f0823018e448621429eabd3- 15false
- 211true
- 33false
- 44false
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Answer : 2. "11"
Q: If (x + k ) is the common factor of x2 + ax + b and x2 + cx + d , then what is k equal to ?
921 060112f43178b94051cea1156
60112f43178b94051cea1156- 1true
- 2false
- 3false
- 4false
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Answer : 1. " "
Q: The product of two numbers is 2028 and their HCF is 13. The number of such pair is-
920 0608f95128899c91069dac6c9
608f95128899c91069dac6c9- 11false
- 22true
- 33false
- 44false
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Answer : 2. "2"
Q: The ratio of two numbers is 2: 3 and their L.C.M is 48. What is the number?
915 05f3f903603c6925a59d3573e
5f3f903603c6925a59d3573e- 18, 6false
- 216, 24true
- 318, 32false
- 425, 28false
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Answer : 2. "16, 24"
Q: Three numbers are in the ratio of 3:5:10 and their LCM is 630. Find their HCF.
911 060701683dac3665e58b1d1ca
60701683dac3665e58b1d1ca- 121true
- 242false
- 363false
- 436false
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Answer : 1. "21"
Q: The least number which when divided by 4, 6, 8 and 9 leave zero remainders in each case and when divided by 13 leaves a remainder of 7 is:
910 05f2e4ed5b6a1cb7a831c2b95
5f2e4ed5b6a1cb7a831c2b95- 185false
- 236false
- 3144false
- 472true
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Answer : 4. "72 "
Q: The product of two number is 4107. If the HCF of the number is 37. The greatest number is
909 05ec4a2bc980ff60a66c065a6
5ec4a2bc980ff60a66c065a6- 1185false
- 2111true
- 3107false
- 4101false
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Answer : 2. "111 "
Q: A number which when divided by 10 leaves remainder of 9, when divided by 9 leaves a remainder of 8, and when divided by 8 leaves a remainder of 7, is:
907 05f07fbfebc929f40b0b9cb7c
5f07fbfebc929f40b0b9cb7c- 1359true
- 21359false
- 31539false
- 4539false
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