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प्रश्न
In the following number, replace M by the smallest number to make resulting number divisible by 3: 46M46
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उत्तर
The given number = 46M46
Sum of its digits = 4 + 6 + 4 + 6 = 20
The number next to 20 which is divisible by 3 is 21
Required smallest number = 21 – 20 = 1
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संबंधित प्रश्न
Write all the factors of: 39
Write the first six multiples of: 4
Write the first six multiples of: 9
Write two numbers which differ by 3 and whose product is 54.
Without making any actual division, show that each of the following numbers is divisible by 11.
110011
Without making any actual division, show that the following number is divisible by 8.
1608
Find whether the following number is divisible by 3: 221
Find whether the following number is divisible by 3: 92349
In the following number, replace M by the smallest number to make resulting number divisible by 11: 70975M
State, true or false:
If a number is divisible by 4. It is divisible by 8.
State, true or false:
If a divide b and c completely, then a divides
(i) a + b
(ii) a – b
also completely.
Write down the factors of 20.
State if the following number is even or odd.
321
State if the following number is even or odd.
253
The greatest number which divides 134 and 167 leaving 2 as remainder in each case is
Write the factors of the following number.
7
Write five three-digit numbers that are multiples of 5.
Factors of 7 __________________
Draw a picture of factor tree.
16
The steps on which the mouse jumps - ____________
The steps on which the cat jumps - ____________
Throw two dice together. What are the numbers that turn up on the faces of the dice? Make a two-digit number using them. If it is a multiple of any of the numbers written next to the circles, you can write it in that circle. Then it is your friend’s turn. The one who can write more numbers in 10 rounds is the winner.
Hint: I have 3 and 2 on my dice. If I make 23, it is not the multiple of any of the numbers. So I will make 32, which is a multiple of 4, and write it in the red circle.

What is the biggest number for which you can find the factors from this chart?
What can you do for numbers bigger than that?
Look at the factor tree. Now you can make another tree like this?


Match the items in column 1 with the items in column 2.
|
|
Column 1 |
|
Column 2 |
|
(i) |
35 |
(a) |
Multiple of 8 |
|
(ii) |
15 |
(b) |
Multiple of 7 |
|
(iii) |
16 |
(c) |
Multiple of 70 |
|
(iv) |
20 |
(d) |
Factor of 30 |
|
(v) |
25 |
(e) |
Factor of 50 |
|
|
|
(f) |
Factor of 20 |
Write all the factors of the following number.
20
