Question
There are 20 Bikes in the No-Parking zone. On a
Particular day, A policeman planned to fine the four bikes of the No-Parking Zone. In how many ways can he plan such that no two of the bikes are next to each other?Solution
Considering 4 bikes as one, there are 17 Bikes (16 + 1) from which a policeman fines such that no two such bikes are next to each other. This can be done in 17C4 ways = 17!/(4! ×13!) = 2380 ways
More Permutation and combination Questions
99% of 4444 + 101% of 6666 =
Find the approximate value of Question mark(?). No need to find the exact value.
(519.79 ÷ 10.03) × (47.98 ÷ 6) + √(63.94) × 4.04 = ?
...1299.99 ÷ 20.21 = ? + 325.985 - (180 ÷ 6 × 24.03)
What approximate value will come in place of question (?) in the following given expression? You are not expected to calculate the exact value.
...- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
9.95% of 1299.99 + 19.95 × 17.05 - 299.99 = ?
? = 26.08 + 18.99 × 25.07
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
(√360.99 + 161.14) ÷ 5 × 249.98 = ?
24.75% of 20.125% of 30.05% of 2196.06 = ?
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