Sequence Q. (1 Viewer)

[YonOra]

Hey,

So I did this by subbing in values (rlly not efficient and time consuming). Can someone show me how they would actually solve this? Thanks


The answer is (B)

 

[idkkdi]

Hey,

So I did this by subbing in values (rlly not efficient and time consuming). Can someone show me how they would actually solve this? Thanks

View attachment 29466
The answer is (B)

each number has magnitude n with rotating +- sign. therefore B.

 

[YonOra]

each number has magnitude n with rotating +- sign. therefore B.

Ah yes, how did i over see that.

 

[CM_Tutor]

Note that there are several ways the answer could have been written, including:

• 
• 
• if you started at

I could make the MCQ harder by making (C) , which gives the sequence and (D) be a correct answer and see how many students don't notice that the alternating signs start from the wrong sign and go for (C).

 

[YonOra]

Note that there are several ways the answer could have been written, including:

• 
• 
• if you started at

I could make the MCQ harder by making (C) , which gives the sequence and (D) be a correct answer and see how many students don't notice that the alternating signs start from the wrong sign and go for (C).

Thank you! I was waiting for your reply

 

[CM_Tutor]

Thank you! I was waiting for your reply

You were?

 

[YonOra]

You were?

Well, you always give great answers.

 

[CM_Tutor]

Well, you always give great answers.

Thank you