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RD SHARMA ENGLISH-PLAYING WITH NUMBERS-All Questions
- Write all prime numbers between: (i) 70 and 90 (ii) 40 and 85
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- What is the smallest prime number? Is it an even number?
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- What is the smallest odd prime? Is every odd number a prime number?...
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- What are composite numbers? Can a composite number be odd? If yes, ...
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- What are the twin-primes? Write all pairs of twin prime between 1 and ...
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- What are co-primes? Give examples of five pairs of co-primes. Are co...
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- Which of the following pairs are always co-primes? (i) two ...
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- Express each of the following as a sum of two or more primes: (i) 1...
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- Express each of the following numbers as the sum of two odd primes: ...
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- Express each of the following numbers as the sum of twin primes: (i...
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- Find the possible missing twins for the following numbers so that th...
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- A list consists of the following pairs of numbers: 51, 53; 55,57; 59...
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- For a number, greater than 10, to be prime what may be the possible di...
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- Write seven consecutive composite numbers less than 100 so that the...
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- State true (T) or false (F): The sum of primes cannot be a prime. The ...
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- Fill in the blanks in the following: A number having only two factors ...
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- Factorize 234 into prime factors.
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- Determine prime factorization of 9000.
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- Determine prime factorization of 20570.
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- Write the smallest 5-digit number and express it as a product of pr...
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