1. The greatest 4-digit number exactly divisible by 10, 15, 20 is ?

9990

9960

9980

9995

Answer: 9960

Explanation:


2. Three bells ring at intervals of 36 seconds, 40 seconds and 48 seconds respectively. They start ringing together at a particular time. They will ring together after every ?

6 minutes

12 minutes

18 minutes

24 minutes

Answer: 12 minutes

Explanation:


3. The greatest number, by which 1657 and 2037 are divided to give remainders 6 and 5 respectively, is ?

127

133

235

305

Answer: 127

Explanation:


4. 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 ?

840

841

820

814

Answer: 814

Explanation:


5. Three tankers contain 403 litres, 434 litres, 465 litres of diesel respectively. Then the maximum capacity of a container that can measure the diesel of the three containers exact number of times is ?

31 litres

62 litres

41 litres

84 litres

Answer: 31 litres

Explanation:


6. A milkman has 75 litres milk in one can and 45 litres in another. The maximum capacity of container which can measure milk of either container exact number of times is ?

1 litre

5 litres

15 litres

25 litres

Answer: 15 litres

Explanation:


7. Let N be the greatest number that will divide 1305, 4665 and 6905 leaving the same remainder in each case. Then, sum of the digits in N is ?

4

5

6

8

Answer: 4

Explanation:


8. Find the greatest number which will exactly divide 200 and 320 ?

10

20

16

40

Answer: 40

Explanation:


9. The greatest number that will divide 729 and 901 leaving remainders 9 and 5 respectively, is ?

15

16

19

20

Answer: 16

Explanation:


10. Find the greatest number that will divide 390, 495 and 300 without leaving a remainder ?

5

15

25

35

Answer: 15

Explanation: