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प्रश्न
Which of the following statement is true?
If two numbers are co-prime, at least one of them must be a prime number.
पर्याय
True
False
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उत्तर
False
Example: 4 and 9 are co-prime numbers but both are composite numbers too.
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संबंधित प्रश्न
Given an example of a number which is divisible by 2 but not by 4.
Given an example of a number which is divisible by 4 but not by 8.
Which of the following statement is true?
The sum of two consecutive odd numbers is always divisible by 4.
Use the same rule to fill the hexagons below.

Now you also make your own magic hexagons.
A number is divisible by 11 if the differences between the sum of digits at its odd places and that of digits at the even places is either 0 or divisible by ______.
If the digit 1 is placed after a 2-digit number whose tens is t and ones digit is u, the new number is ______.
A four-digit number abcd is divisible by 4 if ab is divisible by 4.
If AB + 7C = 102, where B ≠ 0, C ≠ 0, then A + B + C = 14.
1y3y6 is divisible by 11. Find the value of y.
Fill in the blank space in the same way.

