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Sum of any two _______ number is even
The sum of any two even numbers is even.
Example: 4 (even) + 6 (even) = 10 (even)
Sum of any two odd number is ______.
The sum of any two odd numbers is even.
Example: 5 (odd) + 7 (odd) = 12 (even)
Which of the following numbers is divisible by 3?
(which is divisible by 3)
(which is not divisible by 3)
(which is not divisible by 3)
(which is not divisible by 3)
If the LCM and HCF of any two numbers are 21 and 12 respectively, find the product of the numbers.
We know that the product of the number
Hence, the product of the given numbers = 252
Find the HCF of 8 and 24.
The factors of 8 are: 1, 2, 4, 8
The factors of 24 are: 1, 2, 3, 4, 6, 8, 12, 24
Then the greatest common factor of 8 and 24 is 8.
Write first 3 multiples of 50.
We have 50 x 1 = 50; 50 x 2 = 100; 50 x 3 = 150
Hence, the required multiples are 50,100 and 150
Factors of 62 are –
Factors of 62: 1, 2, 31, and 62.
First three multiples of 14 are
The multiples of 14 are 14, 28, 42, 56, 70, 84, 98, 112, and so on.
2 is a number which even as well as ________
2 is the only even number which is also prime number.
The sum of two numbers is 38 and their product is 325. The numbers are
The product of two numbers is 325.
âˆ´ The possible factors are
Here, we observe that out of these factors,
Thus,
Product = and sum
Hence, the required numbers are 13 and 25
The HCF and LCM of two numbers are 12 and 72 respectively. If one of the numbers is 24, find the other
Given that: HCF = 12
LCM = 72
Let the two numbers be a and b, where a = 24, b = ?
We know that: a x b = HCF x LCM
â‡’
â‡’ b =36
Hence, the other number is 36
LCM of 16 and 24 is?
Prime Factorization of 16 is:
Prime Factorization of 24 is:
LCM
LCM (16, 24) = 48
Find the greatest number which divides 132 and 82 leaving 6 and 1, respectively as remainders.
Given numbers are 132 and 82 and the remainders are 1 and 6 respectively.
We have, 132 â€“ 6 = 126 and 82 â€“ 1 = 81
So, we need to find the HCF of 126 and 81
The factors of 81 are: 1, 3, 9, 27, 81
The factors of 126 are: 1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126
Then the greatest common factor is 9.
Hence, the required number is 9
\(30{\rm{ }} + {\rm{ }}\left[ {26{\rm{ }}–{\rm{ }}\{ 28{\rm{ + }}7{\rm{ }}–{\rm{ }}2{\rm{ }} + {\rm{ }}\left( {30{\rm{ }}–{\rm{ }}5{\rm{ }}of{\rm{ 4}}} \right)\} } \right]\) =?
Factors of 125 are –
Factors of 125: 1, 5, 25, 125.
Which of the following are multiples of 23?
The first five multiples of 23 are 23, 46, 69, 92 and 115.
Which of the following numbers have 3 as their factor?
Factors of 123015 = 1, 3, 5, 15, 59, 139, 177, 295, 417, 695, 885, 2085, 8201, 24603, 41005, 123015
Factors of 20163 =1, 3, 11, 13, 33, 39, 47, 141, 143, 429, 517, 611, 1551, 1833, 6721, 20163
Factors of 21063 = 1, 3, 7, 17, 21, 51, 59, 119, 177, 357, 413, 1003, 1239, 3009, 7021, 21063
Which of the following numbers is not a factor of 96?
Factors of 96: 1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 96.
The LCM of 46 and 32 is
Prime Factorization of 32 is:
Prime Factorization of 46 is:
LCM =
LCM = 736
Therefore,
LCM (32, 46) = 736
What is the H.C.F. of 26 and 54?
The factors of 26 are: 1, 2, 13, 26
The factors of 54 are: 1, 2, 3, 6, 9, 18, 27, 54
Then the greatest common factor is 2.
The greatest common factor of 80 and 40 is
The factors of 40 are: 1, 2, 4, 5, 8, 10, 20, 40
The factors of 80 are: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80
Then the greatest common factor is 40.
789 is divisible by
If the sum of the digits of a number is a multiple of 3 then it is divisible by 3. 7+8+9=24 multiple of 3, thus divisible by 3.
If a number is divisible by 2 and 3 both, it is divisible by 6. Clearly the given number is divisible by 3 but not divisible by 2.
A number with 3 or more digits is divisible by 4 if the number formed by its last two digits (i.e., units and tens) is divisible by 4. Thus, the number is not divisible by 4.
Which of the following numbers is composite?
The factors of 39 are 1, 3, 13, and 39. Since 39 has more than two factors, it is a composite number.
The least prime number between 10 and 25 is
Prime number between 10 to 25 is 11,13,17,19,23. Therefore least prime number between 10 and 25 is 11.
Which of the following numbers is not a factor of 86?
Factors of 86: 1, 2, 43, and 86.