Asked in PPSC, FPSC and other one-paper exams (compiled from unofficial resources).

Series, Patterns & Logical ReasoningCoding and Decoding

If $6 \times 2 = 31$, $8 \times 4 = 42$, $2 \times 2 = 11$, $6 \times 6 = 33$, then $8 \times 6 =$ ?

A.$43$Correct answer
B.$48$
C.$44$
D.$46$

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Quick fact: The pattern is: $a \times b = (a + b)(a - b)$ concatenated, so $8 \times 6 = (8+6)(8-6) = 142$, but checking the given examples reveals the rule is $a \times b = (a+b)$ followed by $|a-b|$, giving $43$.

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If $6 \times 2 = 31$, $8 \times 4 = 42$, $2 \times 2 = 11$, $6 \times 6 = 33$, then $8 \times 6 =$ ?

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