Question

Fill in the Blanks

1. A number is called
number
if the sum of its factors, except itself, is greater than the

2. The number 17 and
forms a pair of twin primes.

3. There are
pairs of twin primes in the first 100 natural numbers.

4. Anumber is divisible by
if the number formed by its last two digits is divisible
by it.

5. Two prime numbers are called
primes of n if their average is n.​

Answer 1

Answer:

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