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The logic followed here is as follows: First number X (Sum of digits of first number) = Second number. For 53 : 636 →53 X (4 + 8) = 53 X 12 = 636 For 51: ? → 51 X (5 + 1) = 51 X 6 = 306
If both the equations I and II given below are added, then find the product of roots of newly formed equation.
I: 3x2 + 9x + 5
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Two trains of lengths 100 m and 90 m are running with speeds of 60 km/hr and 57 km/hr respectively towards each other on parallel lines. If they are 70 ...
Train A running at a speed of 46 km/hr. crosses train B in 30 seconds. Find the speed of train B (in km/hr), if the sum of the length of train A and B i...
Open, print and save button are all located on_____________
The downstream speed of a boat is 4 km/hr more than its upstream speed and the ratio of the speed of the boat in still water to the speed of the stream ...
Manoj alone can complete 35% of a work alone in 7 days. Vipin is 20% less efficient than Manoj. Manoj and Vipin together started the work and left after...
A and B are the roots of equation x2 - 13x + k = 0. If A - B = 5, what is the value of k?
Time is taken by two trains running in opposite directions to cross a man standing on the platform in 28 seconds and 18 seconds respectively. It took 24...
A train of length 260 m crosses another train of length 120 m running is opposite direction in 5 sec. If speed of longer train is 90 km/h, then in what ...