how many distinct terms are there in expansion of (x+y+z)^30?
a circle of radius 4 units touches another circle of radius 9 units, and the line l1 is a direct common tangent to both the circles, what is radius of third circles which touches both the circles and even the line l1?
if p , q and r are integers such that p^2 +q^2=221 and q^2 +r^2=125, then how many triplets (p,q,r) are possible?
A rectangular table has 7 secured seats, 4 being on one side facing the window and 3 being on the opposite side. In how many ways can 7 people be seated at the table if 2 people, X and Y must sit on the same side?
in how many ways can all the letters of the word "PERFORMED" be placed in 3*3 grid of squares such that each squares contains exactly one letter and there is at least one vowel in each row and in each column?
suppose series a is 4,11,13,18.........and series b is 2,7,12,...........both series a and b contain 100 terms each .how many common element do series a and b have ? (TITA)
The difference between the SI for 3 yrs and CI for 2 yrs on Rs.4000 at the same rate is Rs.190. What is the rate of interest?
pls explain?
Guys any shortest way to calculate count of numbers divisible by x between some range?
An easy example like: number divisible by 4 in 100
or numbers divisible by 7 between 500 and 900?
I generally try to find the first divisible number and last divisible number the ((last divisible -first divisible)/x +1) but it becomes lengthy when number gets bigger like 27,28.
Any link explaining this in an easier way also will be helpful.
How many numbers are there in between 1000 and 10,000 which when divided by 4, 5, 6 and 7 give remainder 1, 3, 3 and 5 respectively?
A natural number N is 100 times the number of its factors. Find the sum of the digits of N , given that N has only 2 prime factors.
Perimeter of a rectangle is 600 units. It can be perfectly cut into identical squares of maximum length 15 units. How many distinct rectangles can be drawn if sides are integers?
ABC is an isosceles right angled triangle with length of two its sides equal to 4. Find the length of the shortest cut that will divide the triangle into two slices of equal area.
Couldn't find the answer .. Pls post the approach
BASE+BALL=GAMES. Then Find the value of G
a) 1
b) 3
c) 4
d) 5
Approach please
There are a total of 50 questions in a paper. Each correct answer carries +1 mark and wrong answer, a penalty of -1/3. A guy scores 48. How many ways can he obtain that score ?
A 42 wheeler truck having 8 spare whels is driven for 20000km. If each of the 50 wheel covers the same dist, then what is the distance travlled by each wheel?
- None
- 400
- 1600
- 16800
0 voters
Total expenses of a boarding house are partly fixed and partly varying linearly with the no of boarders. The avg expense per boarder is Rs.700 when they are 25 boarders and Rs.600 when there are 50 boarders. What is the avg expense per boarder with 100 boarders?
- 580
- 540
- 570
- 550
0 voters