How many 4 digit numbers have a sum of the digits equal to 9 ????
Sol : 11C3 = 165
Approach please ???
If so please answer
How many three digit numbers have a sum equal to 9 ??
Find the number of 3 digit number having Digits in decreasing order ??
Ans : 10C3
Find the number of 3 digit number digits in a strictly increasing order ?
Ans : 10C3 - 9C2
Approach Please
If for all three digit numbers, the digits are arranged in ascending order :
How many of the resultant numbers are equal to original numbers ?
Ans : 165
How many of the numbers are smaller than the original number ?
Ans : 735
How many distint resultant numbers are there ?
Ans : 219
Approach Please
prepathon mock scores? I think timing ka kuchh locha tha. Va section ended around 20 minutes earlier.
if a ,b, and c are positive real is numbers such that a*b^2*c^3=3/16, what is the minimum value of a+3b+4c?
rickshaw in city A charge rs16 for first km and 45 paise for every subsequent 100m. rickshaw in city B charge rs14 for first km and 35 paise for every subsequent 100m. what is the difference between that one needs to travel by rickshaw in each city such that the fares are minimum possible equal natural numbers?
WhiCh is the best nonCAT series to purchase?
A number when successively divided by 5, 6, 7 leaves remainders of 2, 5, 1 respectively. What is the remainder when the same number is divided by 210? (Approach please)
if 10 tall persons and 5 short persons , working 8 hrs a day take 20 days to paint a wall , while 5 tall persons and 5 short persons , working 4 hours a day take 64 days to paint the wall, how many days will 20 tall persons and 10 short persons , working 2 hrs a days take to complete the same work?
2 cards simultaneously taken out of the well shuffled pack of 52 cards , what is probability that one card is king and other diamond?
can anyone tell me how to take screen shot of questions on laptop and post it on pagalguy?
Looks like computer geeks aplenty here...
My problem..
The WiFi interferes with my Bluetooth mouse and the scroll goes haywire. It is either at the top end or at the bottom end.
Need help.
How many natural numbers smaller than 2 * 10^5 can be written by using the digits 1 and 2 only?
Ans: 94
Approach Pl
Hi, I know this is not the thread for discussing this but i am in need for some quick and correct replies: I joined my company on 10th December 2013, so while filling CAT form whether i should write my work experience ("enter your experience in completed months until 31st July 2015")
as 19 or 20 months ?:(
There are 500 ball in a box.there are two teams a& b.no teams can more than one third of the balls in his turn.team which could not pick the ball in their turn will loose.how many balls first team must pick to ensure his win?
@Nipun008 @Going_High
If N = 3^7 * 10^5 * 11^2
then find the number of factors which are multiple of 9 but not of 90?
Plz explin with approach?
Remainder of (22^33+10^35) divided by 45?