Suppose A1 contains a text. The following two formulas are in Cells B1 and B2, respectively.

=SUBSTITUTE(A1,"e",". ",1)

=LEFT(A1,FIND("e",A1)-1)&"a"&RIGHT(A1,LEN(A1)-FIND("e",A1))

Assume that there is no error returned in either cell.

What should be the redacted part if the output returned in Cell B1 is always the same as the output returned in B2?

Question

Suppose A1 contains a text. The following two formulas are in Cells B1 and B2, respectively.

=SUBSTITUTE(A1,"e",".    ",1)

=LEFT(A1,FIND("e",A1)-1)&"a"&RIGHT(A1,LEN(A1)-FIND("e",A1))

Assume that there is no error returned in either cell.

What should be the redacted part if the output returned in Cell B1 is always the same as the output returned in B2?

BlackTom AI · Accepted Answer

To compare the two formulas, first observe what each one does to the first occurrence of the letter e in A1.

- In B1, the formula =SUBSTITUTE(A1,"e",".    ",1) replaces the first e with the string ".    " (a dot followed by spaces).
- In B2, the formula =LEFT(A1,FIND("e",A1)-1)&"a"&RIGHT(A1,LEN(A1)-FIND("e",A1)) takes everything before the first e, then inserts the single character a, and finally appends everything after the first e. This effectively replaces the first e with the character a.

Now, the question asks for the redacted part such that the outputs in B1 and B2 are always the same. That means the replacement performed by B1 must coincide with the replacement performed by B2. Since B1 uses a specific string replacement (".    "), the only way to achieve equality with B2’s replacement (a single character, namely 'a') is if the redacted part is the character a. In other words, the part of A1 being considered for replacement must be replaced by a, not by the literal dot-and-spaces sequence shown in B1.

Evaluating the answer options:
- Option 1: "1" — This is not the relevant redacted part; replacing with 1 would not align the two outputs given B1’s replacement text.
- Option 2: "a" — If the redacted part is a, then the B2 operation of inserting a matches the effective replacement that would be needed for B1 to produce the same result, satisfying the condition stated in the question.
- Option 3: "not enough information" — The problem provides sufficient structure: B1 replaces with a specific string; B2 replaces with the letter a; to have equality, the redacted portion must be a to reconcile the two. Therefore, claiming not enough information would be incorrect.
- Option 4: "e" — The letter e is what is being replaced, not the replacement itself; choosing e as the redacted part does not address making the two outputs equal, since the question concerns the replacement content, not the target being replaced.

Putting this together, the only option that makes sense as the redacted part to yield matching outputs is the character a, because that aligns B2’s replacement with the necessary replacement to match B1’s result under the given substitution context.

COMM_V 205 101 102 103 2025W1 Exam B1 (Excel) Midterm 2025W1 - Requires Respondus LockDown Browser

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