SAT-Arithmetic Quiz no. 2

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Question 1

What is a prime number?

A	A number which has only two factors
B	A number which has only one factor
C	A number which has more than 2 factors

Question 1 Explanation:

Prime number is a number which has only 2 factors. 7 is a prime number as it has only 2 factors. The two factors are 1 and 7.

Question 2

Is 1 a prime number?

A	Yes
B	No

Question 2 Explanation:

1 is not a prime number because it has only one factor

Question 3

Which of the following numbers is a prime number?

A	3
B	4
C	6
D	9
E	10

Question 4

What is a composite number?

A	a number which has 2 multiples
B	a number which has 2 factors
C	a number which has more than 2 factors
D	a number which has more than 2 divisibles
E	a number which has only one factor

Question 4 Explanation:

10 is a composite number as it has more than 2 factors. The factors of 10 are 1,2,5, and 10

Question 5

which of the following cannot be the sum of two prime integers?

A	7
B	19
C	23
D	31

Question 6

Is sqrt(17) a rational number?

A	Yes
B	No

Question 6 Explanation:

Square Root of any Prime number is Irrational Number because the answer is infinite decimal number. Hence, sqrt(17) is Not Rational.

Question 7

Which of the following could be the difference between two positive integers whose product is 28?

A	1
B	3
C	4
D	7
E	14

Question 7 Explanation:

The product of following Numbers is 28: (28)(1) = 28 (14)(2) = 28 (7)(4) = 28 So the difference could either be 27, 12 or 3.

Question 8

Is 3.1417 a rational number?

A	Yes
B	No

Question 8 Explanation:

Any Number that can be represented in p/q form is a Rational Number. 3.1417 can be represented as 31417/10000 So it is a rational Number.

Question 9

Is 0 a natural number?

A	Yes
B	No

Question 9 Explanation:

Natural Numbers Start from 1 e.g. 1, 2, 3, 4, 5 .......10,0000...... all are natural numbers.

Question 10

Is 3 a factor of 8532?

A	Yes
B	No

Question 10 Explanation:

To check, if 3 is a factor of any number just take the sum of digits present in that number e.g. 8+5+3+2 = 18 3 is a factor of 18. So 3 is also a factor of 8532.

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SAT-Arithmetic Quiz no. 2

SAT-Arithmetic Quiz no. 2

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SAT

SAT-Arithmetic Quiz no. 2

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