HCF

Q.

What is the full form of HCF and LCM?

Q. What is the smallest factor of all numbers?

1. 1
2. 2
3. 3
4. 10

Q.

The HCF of $5$ & $25$ is

1. $1$
2. $5$
3. $25$
4. $50$

Q.

HCF of an even number and odd number is always even

1. True
2. False

Q.

Find the highest number that can divide 184 and 327 after adding 4 and 2 to them respectively.

Q.

HCF of an even number and an odd number is an even number.

1. True
2. False

Q. WHat is the highest common factor that can divide 8, 16, 24, 32 and 40 completely?

1. 8
2. 16
3. 4
4. 2

Q.

What is the H.C.F of 25 and 65?

1. 13

2. 3

3. 7

4. 5

Q. The greatest factor that divides a pair of numbers completely is called _____ of the numbers.

1. HCF
2. LCM
3. composite factor
4. prime factor

Q.

Find the HCF of the following numbers:

(a) 18, 48 (b) 30, 42 (c) 18, 60

(d) 27, 63 (e) 36, 84 (f) 34, 102

(g) 70, 105, 175 (h) 91, 112, 49 (i) 18, 54, 81

(j) 12, 45, 75

Q. H.C.F of 45, 81 and 27 is _____.

1. 45

2. 27

3. 9

4. 1

Q. Find the LCM of 15 and 20 using ladder method

1. 120
2. 30
3. 60

Q. Convert 1070 in Roman numerals.

1. MXX
2. MV
3. MXV
4. MLXX

Q.

Find by inspection HCF of following numbers 10 and 15

Q.

I am a number between $20$ and $30$. If you divide $47$ and $92$ by me, the remainders are $3$ and $4$, respectively. Which number am I?

Q.

HCF of $527$ and $1271$ is

Q.

Find by inspection HCF of following numbers 4 and 10.

Q. In a class there are 28 chairs. If 4 chairs are arranged in a row, then how many such rows will be there in the classroom?

Q.

__________ of two numbers is a factor of their LCM .

Q. Find the pair whose HCF is 10.

1. 10, 100
2. 100, 1000
3. 1000, 10000
4. 1, 100

Q. Find the highest common factor of 12 and 18.

1. 6

Q. 24 oranges and 36 guavas are to be packed in some cartons such that no fruits are left. The greatest possible number of cartons is .

1. 9
2. 12
3. 15

Q. 24 oranges and 36 guavas are to be packed in some cartons such that no fruits are left. The greatest possible number of cartons is .

1. 9
2. 12
3. 15

Q.

HCF of $403$, $465$, $451$ is:

Q.

I can not understand HCF and LCM

Q. If a pair of numbers is completely divisible by 2, then 2 is necessarily the HCF of the pair.

1. True
2. False

Q. The total number of factors for 64 are .

1. 5
2. 6
3. 6
4. 7

Q. How many maximum steps one should skip respectively to reach the top of stairs having 24 steps and 12 steps in equal number of hops?

1. 8
2. 12
3. 6
4. 14

Q. Which among the following is the highest factor of 56?

1. 4
2. 8
3. 28
4. 56

Q.

Find the HCF of any two consecutive numbers?