LCM AND HCF CTET MCQ
01 There are three bells which ring after 30 min, 80 min, and 90 min, respectively. If last time they rang simultaneously at 8:30 am. At what time they will again ring simultaneously?
1. 8:35 am
2. 8:35 pm
3. 8:30 pm
4. 8:40 am
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02 LCM and HCF of two numbers are 96 and 4, respectively. If one of the numbers is 32, then find the another number
1. 12
2. 16
3. 14
4. 18
03 The least number which when divided by 5,6,7 and 8 leaves a remainder 3, but when divided by 9 leaves no remainder
1. 1677
2. 1683
3. 2523
4. 3363
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04 Which is the smallest number which leaves remainder 8 and 12 when divided by 28 and 32 respectively?
1. 204
2. 203
3. 201
4. 200
05 The product of LCM and HCF of 3.02 and 1.8 is
1. 5.436
2. 5.346
3. 5.643
4. 5.364
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06 (Biggest common factor of 5, 10, and 50) + (Smallest common multiple of 10, 20, 30) is equal to
1. 60
2. 65
3. 70
4. 75
07 If (the product of common positive factors of 39 and 52) = 5 x '....' - 117, then the number which will come in blank is
1. 26
2. 30
3. 13
4. 15
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