Question

I have no idea ______ of these we will need for tonight's dinner.
A. how many
B. how much
C. when
D. what​

Answer 1

Answer:

a. how many

hope this helps

Answer 2

I have no idea how many of these we will need for ‘tonight’s dinner’.

Option: A

Explanation:

• Usually, how many can be used in place of referring or asking or talking about how large or huge a number of quantity is.  

• For example, ‘how many brothers do you have?’, ‘how many tickets will you buy?’, and so on.

• From the given sentence, the context is completely based on quantity.  

• It is mentioning about the items needed for tonight’s dinner. So it is appropriate to use ‘how many’, rather than using ‘how much’ or ‘when’ or ‘what’.