Question
In how many different ways can the letter of the word
‘STRONG’ be arranged?Solution
The word STRONG contains 6 different letters. Required number of words = No. of arrangement of 6 letters, taken all at a time = ⁶P₆ = 6! = 720
The average price of two cars, namely 'M' and 'N' is Rs. 45,000 whereas the average price of cars 'N' and 'O' is Rs. 50,000. If the average price of car...
If average weight of a class is ‘y’ kg. If a new student weighing 21 kg took admission, then the average weight is increases by 1 kg. If the...
The average salary of an employee increased by Rs.2000 when he received a bonus of Rs.58000 in his 35th year of service. Find the average salary of the ...
The average marks of all the students decreased by 2 when it was found that marks of one of the student were wrongly interpreted as 80 instead of 40. Fi...
The average of 25 values is 62. The average of the first 13 values is 60, and the average of the last 13 values is 65. If the 13th value is excluded, fi...
The average weight of 6 employees in an office increases by 3 kg when the boss is included. The sum of the average weight of the 6 employees and the bos...
Rohit contributed 96 runs, which was 60% of his team’s total score. If the team got 12 runs as extras, how many runs were made by the rest of the play...
The average mark obtained by Khushi in four papers was 51, and in the fifth paper, she obtained 56 marks. Find his new average in all five papers.
The average weight of 70 notebooks kept in a box is 7 kg. When a new notebook is placed in the box, then the average is 7.1kg. Specify the weight of the...
In a school, 30 boys scored an average of 76 marks while 40 girls scored an average of 88 marks. What is the average marks of all students together? (Ro...
Relevant for Exams:
