Đáp án:
9
Giải thích các bước giải:
1!+2!+3!
=1+2+6
=3+6
=9
`1! + 2! + 3! = 1 + 2 + 6 = 9`
Choose the best answer.
I think you should buy _____ pack of mineral water instead. And you can also buy _____ snacks such as potato crisps, 3 kilos of mandarins, 2 kilos of apples, 3 bunches of bananas, ______ cookies and soft candies.
We should decorate our living room with _____ orange banner. We also need ________ ribbons, balloons, party hats and costume.
I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.