Numbers ATP 3 - Test

Which one of the following is not a prime number? 

• 127

• 139 

• 137 

• 159 

The sum of four consecutive integers is 210. Which one of these four integers is prime?

• 57

• 51

• 49

• 53

How many factors for 275? Or how many equal distributions are possible for 275?

• 9

• 8

• 6

• 12

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

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

Which is the co-prime number pair?

• (4,64)

• (36,18)

• (4,21)

• (7,21) 

If 8A5146B is divisible by 88, then what is the value of AxB? 

• 4 

• 12 

• 8 

• 16 

487 ** 0 is divisible by both 3 and 11.The non zero digits in the hundred's and ten's places are respectively:

• 6 and 2 

• 8 and 2 

• 6 and 3 

• 7 and 4

What is the value of P and Q respectively? If P19248458Q is divisible by 8 and 11; Where P and Q are single digit integers ?

• 7,8 

• 8,6 

• 6,4 

• 5,4 

A 3-digit number 10a3 is added to another 3-digit number 984 to give a 4-digit number 20b7, which is divisible by 11. Then, (a + b) = ?

• 10

• 11

• 12

• 15