1. In how many ways 30 identical chocolates be distributed among 5 students ? 2. In how many ways 30 students can be send to 5 class rooms ? 3. In how many ways 20 different article can be distributed equally among 4 persons ? 4. In how many ways 30 identical...
(Q). In how many ways 15 students can be arranged in a row such that A is always ahead of B ? Sol:- Without any condition 15 students can be arranged in 15! ways. In these arrangements in 50% cases A will be ahead of B and in remaining 50% cases B will be ahead of A....
(Q). In how many ways batting order of 11 players can be made out of 15 players if Rohit is always selected ? Sol:- Since Rohit is always selected so we are to select 10 players out of remaining 14 players which can be done in ¹⁴C₁₀ ways. Now these 11 players can be...
(Q). In how many ways 5 distinct volumes of chemistry & 7 distinct volume of botany books can be arranged on a bookshelf such that no two botany books are together ?Sol:- •C₁•C₂•C₃•C₄•C₅•From above figure we have 6 places (marked by •) to place 7 botany books.So...
(Q). In how many ways batting order of 11 players can be made out of 15 players ? Sol:- First select then arrange. 11 Players can be selected out of 15 players in ¹⁵C₁₁ ways. Now these 11 players can be arranged in 11! ways. Hence total number of ways = ¹⁵C₁₁.11! ...
(Q). In how many ways 15 students can be arranged in a row ?Sol:- 15 students can be arranged in a row in 15! ways Answer (Q). In how many ways 8 prizes from 1ˢᵗ to 8ᵗʰ can be given to a group of 8 students that includes 4 boys & 4 girls. Here a student can...
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