উত্তর সিলেক্ট করলে সঠিক ও ভুল দেখাবে।
ব্যাখ্যা ও সঠিক সমাধান
উত্তর:
9
Even if he takes out all of the blue and green marbles (4 + 4 = 8), he still has one color left. So, to make sure that he has taken out atleast one marble of each colour, he will have to take (4 + 4 + 1 = 9) marbles out of his pocket.