Question

P-alpa form of line x + _/3y - 4 = 0?
(a) x cos pie/6 + y sin pie/6 = 2
(b) x cos pie/3 + y sin pie/3 = 2
(c) x cos (-pie/3) + y sin (-pie/3) = 2
(d) x cos (-pie/6) + y sin (-pie/6) = 2
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Answer 1

$\huge\mathcal\pink{ANSWER:-}$

{b} x cos π/3 + y sin π/3 = 2

Answer 2

Answer:

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There are in all 3+4+2+1=10 people.

A committee of 4 can be formed out of these 10 people in 10 C 4 ways.

Hence the exhaustive number of cases is 10 C 4 = 10*9*8*7=210 4i.

The number of favorable cases for committee to consist of one member from each category (Production, Purchase, Sales & Chartered Accountant) is: 3 C 1 * 4 C 1 * 2 C 1 * 1 C 1

= 3*4*2*1

= 24 Required probability

= 24/210

=4/35

= 0.1143

ii. The probability ‘p’ that the committee of 4 has at least one member from the purchase department is given by: P = P[1 from purchase dept & 3others] + P[2 from purchase dept & 2others] + P[3from purchase dept.

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