HCF and LCM Practice Question and Answer
8 Q: The least multiple of 13, which on dividing by 4, 5, 6, 7 and 8 leaves remainder 2 in each case is
1176 05ef4066bbea49d16b47d19f0
5ef4066bbea49d16b47d19f0- 12522true
- 2840false
- 32520false
- 4842false
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Answer : 1. "2522 "
Q: Three Alarm make a beep after every 48 sec, 72 sec and 108 sec respectively. They beeped together at 10 a.m. The time when they will next make a beep together at the earliest is
1175 05f40d8e8b8958f14fa2af581
5f40d8e8b8958f14fa2af581- 110:07:36 hrsfalse
- 210:07:24 hrsfalse
- 310:07:12 hrstrue
- 410:07:48 hrsfalse
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Answer : 3. "10:07:12 hrs"
Q: a and b are two whole numbers and c is their HCF, then the LCM of those two numbers is
1144 061bac36539095b5c3063b0e1
61bac36539095b5c3063b0e1- 1ab/ctrue
- 2abcfalse
- 3bcfalse
- 4ac/bfalse
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Answer : 1. "ab/c"
Q: If the product of three consecutive numbers is 210 then sum of the smaller number is:
1143 05f0823018e448621429eabd3
5f0823018e448621429eabd3- 15false
- 211true
- 33false
- 44false
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Answer : 2. "11"
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:
1130 05f07fbfebc929f40b0b9cb7c
5f07fbfebc929f40b0b9cb7c- 1359true
- 21359false
- 31539false
- 4539false
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Answer : 1. "359 "
Q: The HCF and LCM of two numbers are 21 and 4641 respectively. If one of the numbers lies between 200 and 300, then the two numbers are-
1127 0600a9f20bc7633585f489302
600a9f20bc7633585f489302- 1273, 357true
- 2273,361false
- 3273, 359false
- 4273, 363false
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Answer : 1. "273, 357"
Q: The ratio of two numbers is 2: 3 and their L.C.M is 48. What is the number?
1113 05f3f903603c6925a59d3573e
5f3f903603c6925a59d3573e- 18, 6false
- 216, 24true
- 318, 32false
- 425, 28false
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Answer : 2. "16, 24"
Q: The LCM of two positive integers is twice the larger number and the HCF of the two numbers is 3. The smaller number is:
1108 0642d2f727ac9a186e4ea4a13
642d2f727ac9a186e4ea4a13- 16true
- 210false
- 39false
- 48false
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