Post Topic Quiz (Chapter 1: Prime Numbers, HCF, LCM)
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1. Write down the smallest prime number.
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2. All prime numbers, with the exception of one of them, are odd.
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True / False
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3. The product of two prime numbers results in a ________ number.
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4. To check if a number is divisible by 3,
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The last digit must be odd.
The sum of all the digits must be 3.
The sum of all digits must be multiple of 3.
The difference between the sum of digits in odd position and sum of digits in even position must be multiple of 3.
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5. This type of number has odd number of factors.
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6. The index can also be called the power or the __________.
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7. The HCF is the highest factor which is _________ between two or more numbers.
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8. The smallest possible value of the LCM is the __________ of the numbers involved.
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largest
smallest
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9. A number is a perfect square when the indices of each of the prime factors is ________.
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10. A number is a perfect cube when the indices of each of the prime factors is __________.
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Write down your Class and Index number
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eg. S10401 (reg 1)
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