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The total number of selections of fruit ...

The total number of selections of fruit which can be made from 3 bananas, 4 apples and 2 oranges, is

A

39

B

315

C

512

D

none of these

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The correct Answer is:
To solve the problem of finding the total number of selections of fruits that can be made from 3 bananas, 4 apples, and 2 oranges, we can break it down into steps: ### Step 1: Determine the number of ways to select bananas We have 3 bananas. The number of ways to select bananas can be calculated as follows: - We can select 0 bananas (1 way) - We can select 1 banana (1 way) - We can select 2 bananas (1 way) - We can select 3 bananas (1 way) Thus, the total number of ways to select bananas is: \[ 0 + 1 + 1 + 1 = 4 \text{ ways} \] ### Step 2: Determine the number of ways to select apples We have 4 apples. The number of ways to select apples is: - We can select 0 apples (1 way) - We can select 1 apple (1 way) - We can select 2 apples (1 way) - We can select 3 apples (1 way) - We can select 4 apples (1 way) Thus, the total number of ways to select apples is: \[ 0 + 1 + 1 + 1 + 1 = 5 \text{ ways} \] ### Step 3: Determine the number of ways to select oranges We have 2 oranges. The number of ways to select oranges is: - We can select 0 oranges (1 way) - We can select 1 orange (1 way) - We can select 2 oranges (1 way) Thus, the total number of ways to select oranges is: \[ 0 + 1 + 1 + 1 = 3 \text{ ways} \] ### Step 4: Calculate the total number of selections Now, we multiply the number of ways to select each type of fruit: \[ \text{Total selections} = (\text{Ways to select bananas}) \times (\text{Ways to select apples}) \times (\text{Ways to select oranges}) \] \[ \text{Total selections} = 4 \times 5 \times 3 = 60 \] ### Step 5: Subtract the case of selecting nothing Since we are required to select at least one fruit, we need to subtract the case where no fruits are selected: \[ \text{Total selections with at least one fruit} = 60 - 1 = 59 \] ### Final Answer: The total number of selections of fruit which can be made from 3 bananas, 4 apples, and 2 oranges is **59**. ---
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OBJECTIVE RD SHARMA ENGLISH-PERMUTATIONS AND COMBINATIONS-Exercise
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