8 Cr -8 C p - SoA- r - p or r - p -8B - r - p or r -2 pC - r - p or r -8 pD- r - p or r - p -8

The correct option is D r = p or r + p = 8 nCx = nCy, then either x = y or x + y = n So, using this property, we get the answer. ...

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Byju's Answer

Standard XII

Mathematics

Summation of Determinant

8 Cr =8 C p ....

Question

⁸C_r = ⁸C_p. So

r = p or r - p = 8

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r = p or r = 2p

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r = p or r = 8p

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r = p or r + p = 8

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Solution

The correct option is D
r = p or r + p = 8

ⁿC_x= ⁿC_y, then either x = y or x + y = n

So, using this property, we get the answer.

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On a number line, co-ordinates of P, Q, R are 3,

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5 and 6 respectively. State with reason whether the following statements are true or false.

(i) d(P,Q) + d(Q,R) = d(P,R)
(ii) d(P,R) + d(R,Q) = d(P,Q)

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d(P,R) = d(Q,R)

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8Cr = 8Cp. So

The correct option is D r = p or r + p = 8 nCx = nCy, then either x = y or x + y = n So, using this property, we get the answer.

⁸C_r = ⁸C_p. So

The correct option is D
r = p or r + p = 8

ⁿC_x= ⁿC_y, then either x = y or x + y = n

So, using this property, we get the answer.