Q.[PARTIALLY ILLEGIBLE — faded scan; printed stem appears as ". 7 . 5 is equal to" with the operator/notation between the digits not clearly legible, likely a permutation/factorial expression]

The stem for this question is genuinely illegible in the source scan, so no confident worked solution can be given here.

The batch data for this item flags the printed stem as partially illegible: it appears in the scan as something like '. 7 . 5 is equal to', which is consistent with a permutation-style expression (e.g. $^{7}P_{5}$) or a factorial-based expression, but the exact operator/notation between the digits '7' and '5' cannot be read reliably from the available scan.

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