Question
Train 'A' having a speed of 18 m/s can cross a man in 10
seconds. The length of train 'B' is 120 metres more than the length of 'A'. If the speed of 'B' is 42 m/sec and both trains are travelling towards each other, then find the time taken by them to cross each other.Solution
Length of train 'A' = 18 × 10 = 180 metres
Length of train 'B' = 180 + 120 = 300 metres
Relative speed = 18 + 42 = 60 m/sec
Required time = (180 + 300) ÷ 60 = 480 ÷ 60 = 8.0 seconds
Find the unit digit of the expression: 1! + 2! + 3! + 4! + 5! + ........ + 2027!.
A six-digit number 4c68d2 is divisible by 12. Find the sum of all possible values of 'c' for the largest possible value of 'd'.
Select the option that gives decimal numbers 0.24, 1.23, 0.0881, and 2.66 arranged in ascending order.
The value of
When a number is divided by 19 remainder is 7. Find the remainder when four times of the same number is divided by 19.
- In a list of nine even consecutive integers, the smallest number is 25% less than the largest number. Find the total of the second smallest and the second ...
- Let ‘n’ be the smallest perfect square divisible by 22, 26, 33 and 39. What is the remainder when ‘n’ is divided by 100?
Find the remainder obtained when 34 × 46 × 52 is divided by 25.
What is the digit in the units place of the number (1624)24 ?
One baker house has to make 600 cakes and another one 750 cakes during the same period of time. In the first house, the order was ready 5 days ahead of ...
