Question
A boat can cover 220 km in downstream in 11 hours and
126 km in upstream in 18 hours. Find the speed of boat in still waterSolution
Downstream speed of the boat = 220/11 = 20 km/hr Upstream speed of the boat = 126/18 = 7 km/hr Speed of boat in still water = (20 + 7)/2 = 13.5 km/hr
If a word ‘HELICOPTER’ is divided into two parts containing equal number of letters without changing the order of the letters, the letters of the fi...
If in the word PHOSPHORICA all the consonants are replaced by the previous letter and all the vowels are replaced by the next letter and then arranged ...
If in ‘54627633’ we add 2 to all the even digits and subtract 1 from odd digits then what is the sum of the digits which is 3rd from the left end a...
If we arrange all the vowels of the word “COMPILATION” in alphabetical order first and then arrange all the consonant in alphabetical order as per E...
In the given words, if the 3rd and 6th (from the left end) letters are exchanged and same is done with 4th and 9t...
If consonants of each word are replaced by their immediate succeeding letter, then how many letters are there between the first letter of the fourth wor...
If all the digits of the number '56342893' are written in descending order from left to right, then the position of how many digits remains unchanged?
If it is possible to make a meaningful English word from 3rd, 5th, 8th and 10th letter of the word ‘ INAUG...
In the word ‘FEATHER’ how many pairs of the letters have the same number of letters between them in the word as in alphabetical series?
How many small letters are there which are preceded by the numbers in both the sets of the above arrangement?
Relevant for Exams:
