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Ask QuestionPosted by Rajmani Chaudhary 7 years, 8 months ago
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Posted by Anushka Singh 7 years, 8 months ago
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Posted by Krishna Khatri 7 years, 8 months ago
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Posted by Janhavi Parwani 7 years, 8 months ago
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Posted by Sweta Verma 7 years, 8 months ago
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Yogita Ingle 7 years, 7 months ago
There are 2 methods to check weather a given number is divisible by 7.
1) This method is good for 3 or 4 digit number:
Method: 1) Double the last digit
2) Subtract (Minus) it from the remaining digits
3) The answer should be divisible by 7 .
Example: Is 434 divisible by 7?
The last digit is 4 so double it (4×2=8). Now subtract 8 from remaining number 43, 43-8=35 and 35 is divisible by 7 (7×5=35). So 434 is also divisible by 7.
2) This method is good for more than 5 digit number( This is the rule for 7) :
Method: 1) Take beginning of the number from right and multiply it by 1, 3, 2, 6, 4, 5 sequence. Remember this sequence otherwise your answer will be wrong . If you still don’t understand, then check the example.
2) For 7 or more digits number, repeat this sequence.
3) Add up all. If the sum(total) is divisible by 7 than that big fat number is divisible by 7 as well.
Example: Is 373212 divisible by 7?
2(1)+7(3)+3(2)+2(6)+1(4)+2(5) = 2+21+6+12+4+10 = 56 and 56 is divisible by 7 so this number 373212 is divisible by 7 as well.
Posted by Mahi Singh 7 years, 8 months ago
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Posted by Krishna Bansal 7 years, 8 months ago
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Posted by Akki Khushi 7 years, 8 months ago
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Mahi Singh 7 years, 8 months ago
Manaswini Subudhi 7 years, 8 months ago
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Posted by Kunal Sahu 7 years, 8 months ago
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Posted by Abhiraj Rajput 7 years, 8 months ago
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Posted by Abhiraj Rajput 7 years, 8 months ago
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Yogita Ingle 7 years, 7 months ago
Let the number is x
Four times a number = 4x
Four times a number added to 2 = 4x + 2
By given condition
4x + 2 = 10
4x = 10 – 2
4x = 8
x = 8/4 = 2
So the number is 2.
Posted by Abhiraj Rajput 7 years, 8 months ago
- 1 answers
Yogita Ingle 7 years, 7 months ago
3b – 4 = 11
3b – 4 + 4 = 11 + 4
3b = 15
3b/3 = 15/3
b = 5
Posted by Sonu Dubey 6 years, 5 months ago
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Posted by Vidhi Chandna 7 years, 8 months ago
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Yogita Ingle 7 years, 7 months ago
Jyoti brough {tex}\frac 34{/tex} kg of apples
She ate {tex}\frac 14{/tex} kg of apples
Apples left = {tex}\frac34-\frac14\;=\;\frac{\;3-\;1}4\;\;=\;\frac24\;=\;\frac12{/tex}
{tex}\frac12{/tex} kg apple was left.
Posted by Vidhi Chandna 7 years, 8 months ago
- 2 answers
Vidhi Chandna 7 years, 8 months ago
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Rajmani Chaudhary 7 years, 8 months ago
1Thank You