RRB NTPC Arithmetic and Number Systems

Question 1

A train 150 m long passes a pole in 15 seconds. What is the speed of the train in km/h?

Accepted Answer

36 km/h

Answer

30 km/h

Answer

40 km/h

Answer

45 km/h

Question 2

The LCM of 12, 18, and 24 is:

Accepted Answer

72

Answer

36

Answer

48

Answer

144

Question 3

If the simple interest on a sum for 2 years at 5% per annum is Rs. 400, what is the principal?

Accepted Answer

Rs. 4000

Answer

Rs. 2000

Answer

Rs. 3000

Answer

Rs. 4500

Question 4

What is 15% of 480?

Accepted Answer

72

Answer

60

Answer

62

Answer

75

Question 5

A number when divided by 6 leaves a remainder of 3. What will be the remainder when the same number is divided by 3?

Accepted Answer

0

Answer

1

Answer

2

Answer

3

Question 6

The ratio of the ages of A and B is 3:5. If the sum of their ages is 64 years, what is B's age?

Accepted Answer

40 years

Answer

24 years

Answer

30 years

Answer

34 years