Advertisements
Advertisements
प्रश्न
Find the LCM and HCF of the following integers by applying the prime factorisation method:
84, 90 and 120
उत्तर
84, 90 and 120
Let us first find the factors of 84, 90 and 120
`84=2^2xx3xx7`
`90=2xx3^2xx5`
`120=2^3xx3xx5`
L.C.M of 84,90 and 120 =`2^3xx3^2xx5xx7`
L.C.M of 84,90 and 120 = 2520
H.C.F of 84,90 and 120 =6
APPEARS IN
संबंधित प्रश्न
Find the LCM and HCF of the following integers by applying the prime factorisation method.
12, 15 and 21
What is the HCF of the smallest prime number and the smallest composite number?
If the product of two numbers is 1080 and their HCF is 30, find their LCM.
Express the number as a product of its prime factor:
7429
If p1x1 × p2x2 × p3x3 × p4x4 = 113400 where p1, p2, p3, p4 are primes in ascending order and x1, x2, x3, x4, are integers, find the value of p1, p2, p3, p4 and x1, x2, x3, x4
For some integer p, every even integer is of the form ______.
If two positive integers A and B can be expressed as A = xy3 and B = x4y2z; x, y being prime numbers then HCF (A, B) is ______.
For some integer m, every even integer is of the form ______.
Read the following passage:
|
Khushi wants to organize her birthday party. Being health conscious, she decided to serve only fruits in her birthday party. She bought 39 apples and 60 bananas and decided to distribute fruits equally among all. |
Based on the above information, answer the following questions:
- How many guests Khushi can invite at the most?
- How many apples and bananas will each guest get?
-
- If Khushi decides to add 42 mangoes, how many guests Khushi can invite at the most?
OR - If the cost of 1 dozen of bananas is ₹ 60, the cost of 1 apple is ₹ 15 and cost of 1 mango is ₹ 20, find the total amount spent on 60 bananas, 36 apples and 42 mangoes.
- If Khushi decides to add 42 mangoes, how many guests Khushi can invite at the most?
The HCF of two numbers 65 and 104 is 13. If LCM of 65 and 104 is 40x, then the value of x is ______.
