TEST HCF AND LCM & INTEGERS

Which of the following is true ?

• 1 is the prime number.

• The prime number have only two factors are 1 and number itself.

• The product of two negative integers is a negative integer.

• Order of calculation must do addition first.

Given that  $2b^7,\ 4b^4,\ 12b^2$ . Find the H.C.F.

•  $2b$  

•  $2b^2$  

•  $12b^7$  

•  $b^4$  

Find the value of  $6+10\div5\times3-4+32\div8$  

• -10

• -12

• 10

• 12

The solution in an experiment an initial  temperature was -122  $\degree C$    then let its temperature decrease by 10 $\degree C$  after that was heated until its temperature rose by 42 $\degree C$   . Calculate the temperature of the solution at the moment. 

• -174

• -90

• 70

• 90

In a mathematics test, each correct answer is given 2 points and each wrong answer is given -3 points. If Jedi gave 14 correct answers and 6 wrong answers, find the total score of Jedi.

• 10

• 28

• -10

• -18

Given that a bottle of vitamin B has 120 capsules, calculate the amount of capsules left after 14 days if two capsules are taken each day.

• 118

• 106

• 92

• 28

Which of the following is false ?

• (-12) > (-19)

• -10 + 2 > 8

• (-52) < (-24)

• 13 – (–4) < 18

Which of the following is in increasing order ?

• -8, -5, -2, 0, 2, 7

• -5, -8, -2, 0, 2, 6

• -1, -2, -3, 0, 1, 2, 3

• -5, -8, -7, -2, -1, 0

How many integers are there between -20 and 2 ?

• 19

• 20

• 21

• 22

The value of (5 x 12) + (-23) x 2 – 22 is

• 8

• -8

• 52

• -52