[amp_mcq option1=”9″ option2=”3″ option3=”7″ option4=”1″ correct=”option1″]
The missing number is 1.
The numbers in the sequence are all prime numbers, except for the missing number. The missing number must be a prime number that is not in the sequence. The only prime number that is not in the sequence is 1.
A prime number is a natural number greater than 1 that is not a product of two smaller natural numbers. A natural number greater than 1 that is not prime is called a composite number.