Question

If two dice are rolled at a time then the probability that the two faces show different numbers is [C] 1 35 5 1 A) ő A) B) D) C) 36 36 answer with explaination​

Answer 1

Answer:

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Step-by-step explanation:

two dice are rolled at a time then the probability that the two faces show different numbers is [C] 1 35 5 1 A) ő A) B) D) C) 36 36 answer with explaination

Answer 2

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Given, a×b=2a×c

⇒a×b−2a×c=0

⇒a×(b−2c)=0

⇒a and (b−c) are collinear.

⇒b−2c=λa

⇒∣b−2c∣

2

=λ

2

∣a∣

2

⇒∣b∣

2

+4∣c∣

2

−4b⋅c=λ

2

∣a∣

2

⇒16+4−4(4)(1)

4

1

=λ

2

(1)

Therefore, λ=±4.