HCF and LCM Aptitude Questions Practice Question and Answer
8 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
1441 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: What is the Highest Factor of $$ {2^{3}×{3^{5}}} and \ {2^{3}×{3^{5}}}$$ ?
1425 0610c651e997056628331c295
610c651e997056628331c295- 1$$ {2^{3}×{3^{5}×{5^{2}}}}$$false
- 2$$ {3^{3}} $$true
- 3$$ {2^{1}×{3^{3}×{5^{1}}}}$$false
- 4$$ {{3^{5}×{5^{2}}}}$$false
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Answer : 2. "$$ {3^{3}} $$"
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:
1419 05f07fbfebc929f40b0b9cb7c
5f07fbfebc929f40b0b9cb7c- 1359true
- 21359false
- 31539false
- 4539false
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Answer : 1. "359 "
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:
1417 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
1417 05ec4a2bc980ff60a66c065a6
5ec4a2bc980ff60a66c065a6- 1185false
- 2111true
- 3107false
- 4101false
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Answer : 2. "111 "
Q: The ratio of two numbers is 2: 3 and their L.C.M is 48. What is the number?
1408 05f3f903603c6925a59d3573e
5f3f903603c6925a59d3573e- 18, 6false
- 216, 24true
- 318, 32false
- 425, 28false
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Answer : 2. "16, 24"
Q: Find the HCF of 60, 148 and 382.
1404 0648721bbbf323e479aa75394
648721bbbf323e479aa75394- 16false
- 224false
- 34false
- 42true
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Answer : 4. "2"
Q: a and b are two whole numbers and c is their HCF, then the LCM of those two numbers is
1379 061bac36539095b5c3063b0e1
61bac36539095b5c3063b0e1- 1ab/ctrue
- 2abcfalse
- 3bcfalse
- 4ac/bfalse
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