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Let the total number of students be x Average marks obtained by the students = 60 Total marks = 60x After correcting the quantitative mistakes the average decreased by (60-45) = 15 marks Total reduction = 15 × 100 = 1500 Now According to the Question, (60x-1500)/x = 50 (60x-1500)= 50x
In how many different ways can the letter of the word ‘JUSTICE’ be arranged?
Salman has a list of 12 friends. He wishes to invite some of them in such a manner that he can enjoy maximum number of parties, but in each party the nu...
In how many different ways can the letters of the word "WINTER" be arranged so that the vowels are at the two ends?
Five articles out of which 3 are cups and rest are glasses have to be arranged on a shelf. Find the number of ways of arrangement in which all three cup...
Four dice are rolled simultaneously. What is the number of possible outcomes in which at least one of the die shows 2?
In How many ways can a student choose a program of 5 courses, if 9 courses are available and 2 courses are compulsory for every student?
In a party 19 persons shake hands with every other person. Find the total no of handshakes in the party? Â Â Â Â
In how many different ways can the letters of the word “MONDAY” be arranged in such a way that the vowels always come together?
In how many ways can the letters of the word TERRORISTS be arranged by taking 4 letters at a time?
In how many ways can 17 members be seated in two lines with seating capacity of 9 and 8 members respectively?
1.    9! ×8!
2.   Â...
