WORK & TIME |
LCM & HCF |
CI & SI |
PROFIT & LOSS |
AVERAGE |

STD-SPEED & TIME |
BOAT & STREAM |
PIPES & CISTRAN |
PERCENTAGE |
RATIO |

NUMBER SYSTEM |
VBODMAS |
MILK & WATER |

## LCM & HCF – Set 01

LCM & HCF SET-1 |
LCM & HCF SET-2 |
LCM & HCF SET-3 |
LCM & HCF SET-4 |
LCM & HCF SET-5 |
LCM & HCF SET-6 |

**Six bells commence tolling together and toll at intervals of 2, 4, 6, 8, 10 and 12 seconds respectively. In 30 minutes, how many times do they toll together?**

8 B.11 C.13 D.16 E.None of these**The least multiple of 7, which leaves a remainder of 4, when divided by 6, 9, 15 and 18 is:**

68 B.98 C.180 D.364 E.None of these**The least number, which when divided by 48, 60, 72, 108 and 140 leaves 38, 50, 62, 98 and 130 as remainders respectively, is:**

11115 B.15110 C.15130 D.15310 E.None of these**The H.C.F. of two numbers is 11 and their L.C.M. is 7700. If one of the numbers is 275, then the other is:**

269 B.275 C.308 D.310 E.None of these**A, B and C start at the same time in the same direction to run around a circular stadium. A completes around in 252 seconds, B in 308 seconds and C in 198 seconds, all starting at the same point. After what time will they meet again at the starting point?**

15 minutes 15 seconds B.42 minutes 30 seconds

C.42 minutes D.46 minutes 12 seconds E.None of these**The L.C.M. of two numbers is 48. The numbers are in the ratio 2 : 3. Then sum of the number is:**

30 B.22 C.40 D.60 E.None of these**The least number, which when divided by 12, 15, 20 and 54 leaves in each case a remainder of 8 is:**

534 B.486 C.544 D.548 E.None of these**The product of two numbers is 4107. If the H.C.F. of these numbers is 37, then the greater number is:**

124 B.100 C.111 D.175 E.None of these**The product of two numbers is 2028 and their H.C.F. is 13. The number of such pairs is:**

1 B.2 C.3 D.5E.None of these**The least number which should be added to 2497 so that the sum is exactly divisible by 5, 6, 4 and 3 is:**

10 B.14C.23 D.30 E.None of these**LCM & HCF SET-1****LCM & HCF SET-2****LCM & HCF SET-3****LCM & HCF SET-4****LCM & HCF SET-5****LCM & HCF SET-6**

**Answer
01.D (16) 02.D (364) 03.B (15110) 04.C (308) 05.D 06.**

**C (40) 07.D (548) 08.C (111) 09.B (2) 10.C (23)
**

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