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 ?
Answer Posted / r.ravi kiran
1)1 four digit number
2)1
| Is This Answer Correct ? | 5 Yes | 22 No |
Post New Answer View All Answers
From the below mentioned options choose the number that comes to 15 when divided by 4 and added by 9?
a block of ice floats on water in a beaker, as the ice melts,the water level in the beaker will
Average of 5 number is -10 sum of 3 numbers is 16,what is the average of other two numbers?
Everyday in his business a merchant had to weigh amounts from 1 kg to 121kgs, to the nearest kg.What are the minimum number of weight required and how heavy should they be?
1992 Feb have 5 Sundays. In which year, the month Feb have 5 Sundays next?
vernanlar : place :: finger print : ?
f(X)-f(X-1)=f(X-8) FOR X>5 THEN X=
There are 19 red balls and one black ball . Ten balls are put in one jar and the remaining 10 are put in another jar. what is the possibility that the black is in the right jar.
Let's say that you have 25 horses, and you want to pick the fastest 3 horses out of those 25. In each race, only 5 horses can run at the same time because there are only 5 tracks. What is the minimum number of races required to find the 3 fastest horses without using a stopwatch?
There are 4 boys and 3 girls. What is the probability the boys and girls sit alternately?
Concentrations of three wines A, B and C are 10, 20 and 30 percent respectively. They are mixed in the ratio 2 : 3 : x resulting in a 23% concentration solution. Find x.
No of financial emergency announced by president
a cylinder ingot 6cms in diameter and 6 cms in height is and spheres all of the samesize are made from the material obtained.what is the diameter of each sphere?
15 lit of water containing 20 % of alcohol ,then added 5 lit of water .What is the % of alcohol?
There are two trees in a lawn. One grows at a rate 3/5 of the other in 4 years. If the total growth of trees is 8 ft. What is the height of the smaller tree after 2 years