The H.C.F of two numbers is 8. which of the following can never be their L.C.M
Answer
24
48
56
60
Question 2
Question
The LCM of two numbers is 1820 and their HCF is 26. If one number is 130 then the other number is:
Answer
70
1690
364
1264
Question 3
Question
The HCF and LCM of two numbers are 11 and 385 respectively. The numbers are
Answer
11 and 385 & 55 and 77
11 and 385
55 and 77
20 and 770
Question 4
Question
The HCF of two numbers, each having three digits is 17 and their LCM is 714. The sum of the numbers will be:
Answer
289
391
221
731
Question 5
Question
The sum of two numbers is 36 and their HCF is 4. How many pairs of such numbers are possible?
Answer
1
2
3
4
Question 6
Question
If the ratio of two numbers is 2:3 and their LCM is 54, then the sum of the two numbers is
Answer
15
5
45
270
Question 7
Question
The HCF and product of two numbers are 15 and 6300 respectively. The number of positive pairs of the numbers is
Answer
4
3
2
1
Question 8
Question
The sum of two numbers is 384. HCF of the numbers is 48. The difference of the numbers is
Answer
100
192
288
336
Question 9
Question
The maximum number of students among whom 1001 pens and 910 pencils can be distributed in such a way that each student gets the same number of pens and same number of pencils, is
Answer
91
1001
910
1911
Question 10
Question
The greatest number of four digits which when divided by 12,16 and 24 leave remainders 2,6 and 14 respectively is
Answer
9974
9970
9807
9998
Question 11
Question
What is the least number of square tiles required to pave the floor of a room 15 m 17 cm long and 9 m 2 cm broad?
Answer
840
841
820
814
Question 12
Question
The LCM of two numbers is 20 times their HCF. The sum of HCF and LCM is 2520. If one of the number is 480, the other number is
Answer
400
480
520
600
Question 13
Question
An electronic device makes a beep after every 60 sec. Another device makes a beep after every 62 sec. They beeped together at 10 a.m. The time when they will next make a beep together at the earliest, is
Answer
10:28 am
10:30 am
10:31 am
Noneof these
Question 14
Question
Find the largest number of four digits which is exactly divisible by 27,18,12,15
Answer
9700
9730
9720
9710
Question 15
Question
Six bells commence tolling together and toll at the intervals of 2,4,6,8,10,12 seconds resp. In 60 minutes how many times they will toll together.
Answer
15
16
30
31
Question 16
Question
The ratio of two numbers is 3 : 4 and their H.C.F. is 4. Their L.C.M. is
Answer
27
22
56
48
Question 17
Question
Find the greatest number which on dividing 1661 and 2045, leaves a reminder of 10 and 13 respectively
Answer
125
127
129
131
Question 18
Question
The HCF and LCM of two numbers are 13 and 455 respectively. If one of the numbers lies between 75 and 125, then, that number is:
Answer
78
91
104
117
Question 19
Question
The least number which when divided by 4, 6, 8, 12 or 16 leaves a remainder of 2 in each case is:
Answer
46
48
50
56
Question 20
Question
The LCM of two numbers is 495 and their HCF is 5. If the sum of the numbers is 100, then their difference is: