A four digit number is to be formed using the digits 1 to 7
All digits of the number are different and repetition is not
allowed.
1. How many such numbers can be formed ?
2. How many such numbers are divisible by 4 ?
Answers were Sorted based on User's Feedback
Answer / kaustubh
There are total 7 nos
out of which a 4 digit no is to be formed.
7 nos can be arranged in 7! and 4 digit no. can be formed
in 4*7! ways
Is This Answer Correct ? | 3 Yes | 20 No |
A boy scores 9 marks more than his friend in an exam and has 56% marks of the total of their marks. Calculate the marks scored by each of them.
1/8 Is divided by 's' , if 's' is increased by 2 times, what Will be the result.
WHO WAS GIVEN BEST ACTOR AWAR 2010 IN FILM FARE?
what type of qalifications / education skill is needed for clarical bank exam of sbi?
5 Answers L&T, State Bank Of India SBI,
In a group of 15 students,7 of them have studied Marathi, 8 of them have studied History, and 3 have not studied either. How many students studied both Marathi and History?
A monkey climbs a 52 – m smooth pole. It climbs 6 m up in one minute and slips 2 m down in every alternate minute. How long will it take to reach the top of the pole?
In a mixture, R is 2 parts and S is 1 part. In order to make S to 25% of the mixture, how much of R is to added?
out of 55 eggs 5 are defective. what is % of defective eggs
Q)There are two pipes A and B. If A filled 10 liters in an hour, B can fill 20 liters in same time. Likewise B can fill 10, 20, 40, 80, 160…... If B filled in 1/16 of a tank in 3 hours, how much time will it take to fill the tank completely?
The hour hand lies between 3 and 4. Tthe difference between hour and minute hand is 50 degree.What are the two possible timings?
Rakesh buys 1 gallon of milk for Rs.12 and mixes it with 20% water. He then sells it for Rs.15, What is the percentage of gain that Rakesh would get.
find missing no 6 7 8 8 8 ?