Which one of the following is not a prime number?

Numbers ATP 3 - Test

Quiz
•
Mathematics
•
Professional Development
•
Hard
Thirumoorthy Rathinakumar
Used 6+ times
FREE Resource
30 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
127
139
137
159
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The sum of four consecutive integers is 210. Which one of these four integers is prime?
57
51
49
53
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How many factors for 275? Or how many equal distributions are possible for 275?
9
8
6
12
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
You have 200 doors in a row that are all initially closed. you make 200 passes by the doors starting with the first door every time. the first time through you visit every door and toggle the door (if the door is closed, you open it, if its open, you close it). the second time you only visit every 2nd door (door #2, #4, #6). the third time, every 3rd door (door #3, #6, #9), ec, until you only visit the 200th door. After the last pass, how many doors are closed?
10
190
186
14
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In palani temple there are some magical bells which toll 20 times in a day, simultaneously. But every bells tolls at a different interval of time, but not in a fraction of minutes. The maximum number of bells in the temple?
10
12
40
80
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which is the co-prime number pair?
(4,64)
(36,18)
(4,21)
(7,21)
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If 8A5146B is divisible by 88, then what is the value of AxB?
4
12
8
16
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