If 4 x 8 = 42 ; 6 x 4 = 23 ; 8 x 6 = 34 then 2 x 4 = ?

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Solution

The correct option is B 21
The rule is : Divide the number by 2 and write the result in the reverse order
4×8=482=24⇒42 etc
∴2×4=242=12⇒21

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8 \div 4 = ?

4 \times 8 = 42; 6 \times 4 = 34

2 \times 4 = ?

If $\frac{4 x + 8}{5 x + 8} = \frac{5}{6}$ , then x = ?

(a) 4

(b) 6

(d) 12

- \frac{3}{4} = \frac{6}{x}

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