order of basic strength

2 is the least basic as the lone pair is involved in aromatizing the ring
1 is the maximum basic as one of the lone pairs is used to aromatize the ring and the other lone pair is available
but how do we distinguish between 3 and 4
the options are:


a.1>3>4>2


b.3>2>4>1


c.4>3>2>1


d.3>4>2>1


by the above discussion we can make out that the answer is a.
but how to distinguish between option 3 and 4. how can we say that 3 is more basic than 4.


[![enter image description here](https://i.stack.imgur.com/f4rpl.jpg)](https://i.stack.imgur.com/f4rpl.jpg)




I think 4 should me more basic than 3 since $ -CH\_3 $ has $ +I $ effect due to which electron density on $N$ increases.


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