Question : If $A:B=3:4$ and $B:C=6:5$, then $C:A$ is

Option 1: $10:9$

Option 2: $9:10$

Option 3: $8:9$

Option 4: $9:8$

Question : if $a-b=3$ and $a^3-b^3=117$, then $|a+b|$ is equal to:

Option 1: 3

Option 2: 5

Option 3: 7

Option 4: 9

Question : If $a:b=5:7$, then $\left(6a^2-2b^2\right):\left(b^2-a^2\right)$ will be:

Option 1: 12 : 5

Option 2: 21 : 5

Option 3: 13 : 6

Option 4: 17 : 8

Question : Directions: In the following question, find the odd sequence of numbers from the given alternatives.

Option 1: 1, 2, 4, 8 

Option 2: 2, 6, 10, 14

Option 3: 3, 9, 15, 21

Option 4: 7, 21, 35, 49

Question : Directions: In the following question, select the one which is different from the other three alternatives.

Option 1: 45, 6, 7

Option 2: 15, 3, 4

Option 3: 35, 5, 6

Option 4: 23, 4, 5