let A be the event of getting exactly 3 defectives in the examination of six mobile phones And B be the event of getting seventh mobile phone is defective. Then, Required Probability = P(A∩B) = P(A) × P(B/A) Now, P(A) = 4C3 × 8C3 / 12C6 = (4!/3! × 8!/(5! ×3!))/(12!/(6! ×6!)) = (4 ×56)/924 = 8/33 And P(B/A) = Probability that the seventh examined mobile phones is defective given that there were three defectives in the first six pieces examined = 1/6 Hence, the Required Probability = 8/33 ×1/6 = 4/99
Which is NOT a Directive Principle to be followed by the State for policy-making?
Which of the following acids is NOT present in fruits or vegetables?
Which of the following is NOT a general economic cause of poverty?
The binary equivalent of the octal number 473 is
Which DPSP emphasizes the importance of providing adequate means of livelihood to all citizens and preventing the concentration of wealth and resources ...
The compound in which a hydroxy group, -OH, is attached to a saturated carbon atomwhich has two other carbon atoms attached to it is called:
The reign of Raja Krishnadev Raya is considered the golden age of which literary language?
'Tara saari' is basically related to which state?
Dhruvasena II is related to which of the following ruling dynasties?
