Question
A boy sitting in a train moving with a uniform velocity
drops a coin outside. A man standing outside the train will find the trajectory of the coin to be -Solution
Parabola, because when the coin is dropped at a particular point, it has the same velocity as the running train. So, by Newton's first law, it continues its motion horizontally with that velocity.
Seven books P, Q, R, S, T, U are place side by side. R, Q and T have blue covers and other books have red covers. Only S and U are new books and the re...
Using 2, 2, 3, 3, 3 as digits, how many distinct numbers greater than 30000 can be formed?
The letters A, B, C, D and E are arranged in such a way that there are exactly two letters between A and E. How many such arrangements are possible?
A student appeared in 6 papers. The maximum marks are the same for each paper. His marks in these papers are in the proportion of 5 : 6: 7: 8: 9 : 10. ...
X and Y run a 3 km race along a circular course of length 300 m. Their speeds are in the ratio 3:2. If they start together in the same direction, how m...
The increase in the price of a certain item was 25%. Then the price was decreased by 20% and then again increased by 10%. What is the resultant increas...
What is the value of X in the sequence 2, 12, 36, 80, 150, X?
Consider the following statements in respect of a rectangular sheet of length 20 cm and breadth 8 cm:
1. It is possible to cut the sheet exact...
The difference between a 2-digit number and the number obtained by interchanging the positions of the digits is 54.
Consider the following sta...
Consider two Statement and a Question :
Statement - 1: Â Priya is 4 ranks below Seema and is 31st from the bottom.
Statement - 2: En...
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