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Radius = 28/2 = 14 m Speed of boy = 36 km/hr. = 36×5/18 = 10 m/s Circumference of the circle = 2 πr = 88 m Distance covered in 3 rounds = 3×88 = 264 m Time taken = 264/10 = 26.4 seconds
Nine boys have to stand in a circle. In how many ways they are to be stand on the circumference of circle?
Find the number of words that can be formed by using all letters of the word 'LAPTOP', if order of vowels remains same.
In how many ways can 3 boys and 2 girls can be seated in a row so that they are in alternate position.
In how many ways can the letters of the word VOWEL can be arranged so that all the consonants occupy odd places, vowels come on even places?
In how many different ways can the letters of the word “MONDAY” be arranged in such a way that the vowels always come together?
In how many ways can the letters of the word ENGINEERING be arranged?
In how many ways, can a team of 11 players be selected from a squad of 16 players?
From 6 officers and 8 Jawans, in how many ways can 5 be chosen to include exactly 3 officers?
How many four digit numbers greater than 5000 can be formed with the digits 4 ,5, 7, 8, and 9?
A total of 24 points are given on a plane, out of which 10 are collinear. How many distinct straight lines can be formed using these points?
