Advertisements
Advertisements
प्रश्न
Find the LCM and HCF of the following integers by applying the prime factorisation method.
12, 15 and 21
Advertisements
उत्तर
 |
 |
 |
12 = 2 × 2 × 3
15 = 3 × 5
21 = 3 × 7
H.C.F of 12, 15 and 21 = 3
L.CM of 12, 15 and 21 = 2 × 2 × 3 × 5 × 7
L.C.M of 12, 15 and 21 = 420
APPEARS IN
संबंधित प्रश्न
State fundamental theorem of arithmetic?
Determine the prime factorisation of each of the following positive integer:
20570
Can two numbers have 16 as their HCF and 380 as their LCM? Give reason.
Write the exponent of 2 in the price factorization of 144.
Express the number as a product of its prime factor:
156
Express the number as a product of its prime factor:
7429
If m, n are natural numbers, for what values of m, does 2n × 5m ends in 5?
Find the H.C.F. of 252525 and 363636
If 13824 = 2a × 3b then find a and b
Find the greatest number consisting of 6 digits which is exactly divisible by 24, 15, 36?
What is the smallest number that when divided by three numbers such as 35, 56 and 91 leaves remainder 7 in each case?
When a number is divided by 7, its remainder is always ______.
The ratio of LCM and HCF of the least composite and the least prime numbers is ______.
For some integer q, every odd integer is of the form ______.
Show that 12n cannot end with the digit 0 or 5 for any natural number n.
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 36 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 prime factorisation of the number 5488 is ______.
