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Total number of pens = 6 + 5 + 4 = 15 Three pens are chosen at random. Then, n(S) = ¹⁵C₃ = (15 ×14 ×13 )/(3 ×2 ×1) = 130 Quantity I. n(E) = ⁶C₂ × ⁴C₁ = 15 × 4 = 60 P(E) = 60/130 = 6/13 Quantity II. n(E) = ⁶C₁ × ⁵C₁ × ⁴C₁ = 6 × 5 × 4 = 120 P(E) = 120/130 = 12/13 ∴ Quantity I < Quantity II.
If the ratio of speeds of 'A' and 'B' is 5: 6 and 'B' allows 'A' a start of 70 metres in a 1.2 km race, who will win the race and by what distance?
‘Stay Safe Online’ Campaign and ‘G20 Digital Innovation Alliance’ were launched on which date?
Consider the following pairs of Articles of the Constitution and States for which special provisions have been made: Article of the Constitution State ...
If ‘+’ means ‘–‘,‘–‘ means ‘÷’, ‘÷’ means ‘×’ and ‘×’ means ‘+’, what will come in place of the question mark (?...
A prepayment of insurance premium will appear in
Consider the following statements:
1. The concept of Helicopter money is used to boost demand in the economy.
2. Negative interest rate...
How will the plant be affected if the rate of respiration becomes more than the rate of photosynthesis?
What will be the measurement of the angle made by the hour and minute hands of a clock when the time is ‘quarter past 3’?
From point X, a person walks 45 m towards the east. He then takes a left turn and walks 40 m. He then takes a right turn and walks 90 m. He then takes a...
Which of the following is the parent ministry of PMJDY?
