Question
A five digits number is chosen at random. What is the
probability that all the digits are distinct, the digits at odd places are odd and the digits are at even places are even?Solution
Odd digits – 1, 3, 5, 7, 9 Even digits – 0, 2, 4, 6, 8 Since, odd digits at odd places and even digits at even place. Places of odd digits – 3 Places of even digits – 2 ∴ Favourable ways = ⁵P₃ × ⁵P₂ = 5 × 4 × 3 × 5 × 4 = 1200 ∴ Total five digits numbers that can be formed = 9 × 10 × 10 × 10 × 10 = 90,000 Required probability = 1200/90000 = 1/75
Find the appropriate word.
Find the appropriate word.
Find out the appropriate words.
Find the appropriate word.
Find the appropriate word.
The Prime Minister ___________ that the country could only _______ economically if planners had a clear _______ of rural development in the context of ...
The action taken against the spokespersons who insulted the Prophet may have __________ tempers in the short term, but social media warriors wil...
What is the tone of the passage according to you?
Find the appropriate word.
Which of the following options is most suitable for blank 1?
