If r, s, t are prime numbers and p, q are two positive integers such that LCM of p, q is…
Mathematics · JEE Main · NTA Exams — Permutations and Combinations
If r, s, t are prime numbers and p, q are two positive integers such that LCM of p, q is \(r^{2} 5^{4} t^{2}\), then the number of ordered pair (p, q) is
- 225
- 224
- 248
- 255
Answer
(A) 225
Sign up free on Edukali to view the step-by-step worked solution and practice thousands of similar questions.
Related practice questions
- Out of 10 points in a plane 6 are in a straight line. The number of triangles formed by joining these points…
- If ^ n P _ 4 =24 ^ n C _ 5 , then the value of n is
- The total number of ways of arranging the letters AAAA BBB CC D E F in a row such that letters C are…
- In a college of 300 students every student reads 5 newspapers and every newspaper is read by 60 students. The…
- The letters of the word RANDOM are written in all possible orders and these words are written out as in a…
- The total number of ways in which 11 identical apples can be distributed among 6 children is that at least…
- From a group of 10 men and and 5 women, four member committees are to be formed each of which must contain at…
- Three couples (husband and wife) decide to form a committee of three members. The number of different…
More Permutations and Combinations questions · Browse all practice questions