A. 12 mid night
B. 3 A.M.
C. 6 A.M.
D. 9 P.M.
LCM and HCF
The least multiple of 13, which on dividing by 4,5,6,7 and 8 leaves remainder 2 in each case is:
A. 2520
B. 842
C. 2522
D. 840
Find the greatest number of five digits which when divided by 3, 5, 8, 12 leaves 2 as remainder.
A. 99990
B. 99948
C. 99962
D. 99722
The HCF of two numbers 12906 and 14818 is 478. Their LCM is:
A. 400086
B. 200043
C. 600129
D. 800172
The LCM of two numbers is 1920 and their HCF is 16. If one of the numbers is 128, the other is:
A. 204
B. 240
C. 260
D. 320
The LCM of two numbers is 1820 and their HCF is 26. If one number is 130, the other is:
A. 70
B. 1690
C. 364
D. 1264
The LCM and the HCF of the numbers 28 and 42 are in the ratio:
A. 6 : 1
B. 2:3
C. 3:2
D. 7:2
The HCF of two numbers is 8. Which one of the following can never be their LCM?
A. 24
B. 48
C. 56
D. 60
Two numbers, both greater than 29, have HCF and LCM, 4147. The sum of the numbers is:
A. 966
B. 696
C. 669
D. 666
The product of the LCM and HCF of two numbers is 24. The difference of the two numbers is 2. Find the numbers?
A. 8 and 6
B. 8 and 10
C. 2 and 4
D. 6 and 4
Four bells ring at intervals of 4, 6, 8 and 14 seconds. They start ringing simultaneously at 12 O’ clock. They will again ring simultaneously at:
A. 12 hrs 2 min 48 sec
B. 12 hrs 3 min 30 sec
C. 12 hrs 3 min 20 sec
D. 12 hrs 3 min 44 sec
The least number, which when divided by 12, 15, 20 or 54 leaves a remainder of 4 in each case is:
A. 450
B. 454
C. 540
D. 544
The LCM of two numbers is 30 and their HCF is 5. One of the numbers is 10, the other is:
A. 20
B. 25
C. 15
D. 54
LCM of two numbers is 225 and their HCF is 5. If one number is 25, the other will be:
A. 5
B. 25
C. 45
D. 55
The LCM of two numbers is 864 and their HCF is 144. One of the numbers is 288, the other is:
A. 576
B. 432
C. 1296
D. 144