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Box8 Interview Questions and Answers

Updated 5 Dec 2024

Q1. There is an amoeba which is doubling his size in every minute. If the size of amoeba was equal to a box at 7 PM then at what time it was half of the box?

Ans.

The amoeba was half the size of the box at 6:59 PM.

  • The amoeba doubles in size every minute.

  • To find when it was half the size, we need to find the time when it was one size smaller than the box.

  • Since the amoeba doubles in size every minute, it was one size smaller at 6:59 PM.

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Q2. A batsman has scored 84 runs in his 12 inning and his average increased by 2 %. how much he has scored in 11th inning.

Ans.

The batsman scored 80 runs in his 11th inning.

  • Calculate the original average of the batsman before the 12th inning.

  • Calculate the new average of the batsman after the 12th inning.

  • Use the formula: New Average = (Total Runs + Runs in 12th Inning) / (Total Innings)

  • Calculate the total runs before the 12th inning using the original average.

  • Subtract the total runs before the 12th inning from the total runs after the 12th inning to get the runs in the 12th inning.

  • Subtract the runs in...read more

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Q3. What is Excel short cut keys?

Ans.

Excel shortcut keys are key combinations that perform specific tasks in Excel quickly and efficiently.

  • Ctrl + C: Copy

  • Ctrl + V: Paste

  • Ctrl + X: Cut

  • Ctrl + Z: Undo

  • Ctrl + Y: Redo

  • Ctrl + S: Save

  • Ctrl + P: Print

  • Ctrl + F: Find

  • Ctrl + B: Bold

  • Ctrl + I: Italic

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Q4. First element having multiple count

Ans.

Use a hashmap to store the count of each element in the array and then iterate through the array to find the first element with multiple occurrences.

  • Create a hashmap to store the count of each element in the array.

  • Iterate through the array and update the count in the hashmap.

  • Once the count of an element reaches 2, return that element as the first element with multiple occurrences.

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Q5. LCA of generic tree

Ans.

Find the lowest common ancestor of two nodes in a generic tree.

  • Traverse the tree to find paths from root to each node

  • Compare the paths to find the LCA node

  • Handle cases where one node is ancestor of the other

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Q6. Left view of Binary tree

Ans.

Left view of Binary tree is the set of nodes visible when the tree is viewed from the left side.

  • Traverse the tree level by level from left to right

  • Keep track of the first node encountered at each level

  • Example: For a tree with root node A and left children B and C, the left view would be [A, B]

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