Question

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Answer 1

Step-by-step explanation:

correct answer (B) 6

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Answer 2

Question -

If $\rm \frac{12}{13} ^{4} \times \frac{13}{12} ^{ - 8} = \frac{12}{13} ^{2x}$, then x is

Answer -

➩ $\rm \frac{12}{13} ^{4} \times \frac{13}{12} ^{ - 8} = \frac{12}{13} ^{2x}$

➩ $\rm \frac{12}{13} ^{4} \times \frac{12}{13} ^{ 8} = \frac{12}{13} ^{2x}$

➩ $\rm \frac{12}{13} ^{4 + 8} = \frac{12}{13} ^{2x}$

➩ $\rm \frac{12}{13} ^{12} = \frac{12}{13} ^{2x}$

➩ $\rm 2x = 12$

➩ $\rm x = \frac{12}{2}$

➩ $\rm x = 6$

$\therefore$Option B is correct.

Question :-

If A = { x : x is a colour of rainbow } and B = { white, red, green }, then a intersection B is

Answer :-

A = x = { Violet, Indigo, Blue, Green, Yellow, Orange, Red }

B = { white, red, green }

$\therefore$A ∩ B = { red, green }

Option D is correct.