The correct option is C 4
Rajiv has 24 Mangoes.
Rajiv packed 5 mangoes in the first box.
The remaining mangoes =24−5=19.
Now, Rajiv packed the second box by taking 5 mangoes.
So, the remaining mangoes =19−5=14
Again, Rajiv took 5 mangoes and packed the third box.
So, the remaining mangoes =14−5=9
Finally, Rajiv took 5 mangoes and packed the fourth box.
Now, the remaining mangoes =9−5=4
This time it is not sufficient to pack another box.
So, the number of mangoes remained unpacked is 4.