PRIME NUMBERS
Authored by Thị Vũ
Mathematics
7th Grade
Used 6+ times
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8 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which are twin primes?
(4; 5)
(7;9)
(2;7)
(3;5)
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which is a prime?
123
111
147
101
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Given 11 is a prime. Find a prime so that they can be twin primes.
9
13
7
5
4.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Find a prime p such that p+2 and p+10 are also primes.
p= (a)
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
D = 1112111 is a prime or composite number?
prime
composite number
6.
FILL IN THE BLANK QUESTION
2 mins • 1 pt
Fill ONE NUMBER in the blank.
"There are two primes. Their sum and their product are also prime."
Their sum is (a) .
7.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Consider the following statements:
(I) All prime numbers are odd numbers.
(II) There are 5 single digit prime numbers.
(III) There are infinitely many prime numbers.
(IV) All prime numbers has only two factors.
(I) and (IV)
(II), (III) and (IV)
(III) and (IV)
More than one of the above.
None of the above.
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