1)Boats and streams
2)Times speed and distance
3)Problem on trains
4)Simple interest and compund interest and rate interest
5)Profit in ratio , investment and proportion {Three partners shared the profit in a business in the ratio 5 :7 :8. They had partnered for 14 months, 8 months and 7 months respectively. What was the ratio of their investments?}
Permutations and combinations
Average on ages ,
6)A kite is flying with a string of length 200 m. If the thread makes an angle
30∘ with the ground, find the distance of the kite from the ground level.
1) permutations and combinations
2) fascinating number
3) reverse string (Given a string str and an integer k, the task is to reverse alternate k characters of the given string. If characters present are less than k, leave them as it is.
Examples:
Input: str = “geeksforgeeks”, k = 3
Output: eegksfgroeeks
Input: str = “abcde”, k = 2
Output: bacde
)
4)concat two list in another list in ordered form
5)Given an array of strings strs, group the anagrams together. You can return the answer in any order.
Example
Input: strs = ["eat","tea","tan","ate","nat","bat"]
Output: [["bat"],["nat","tan"],["ate","eat","tea"]]
Input: strs = [""]
Output: [[""]]
Input: strs = ["a"]
Output: [["a"]]