A lateral side of an isosceles triangle is 15 cm and the altitude is 8 cm. What is the radius of the circumscribed circle?
- 9.5
- 9.125
- 9.625
- 9.375
0 voters
All three-digit numbers in which the ten's digit is a perfect square are formed by using the digits 1 to 9. The sum of all such numbers is
ABCDEFGH is a regular OCTAGON where the diagonals AC and BH intersect at O. What is the measure of angle(AOH) ?.
Please mention the approach as well.
can anybody tell the approach
Q A tower has ten floors, each need to be painted with either pink or yellow colour.No two adjacent floors can be coloured pink.In how many ways can the tower be painted? ...................Please share the approach as well
In how many ways can a 2*10 rectangle be tiled using 2*1 or 2*2 tiles ?Please share the approach as well
need approach on tis: How many 3 element subsets of the set { 1,2,3,4,.....20} are such that product of the 3 nos. is divisible by 4?
#Easy..Q.there are 5 boys and 5 girls.In how many ways can a committee of 4 members be selected so that it contains atleast one boy and one girl?
Three motorcycles started simultaneously from point P to point Q along the same highway. The second motorcycle travelled at a speed of 30 km/hr higher than that of the first motorcycle and arrived at Q 3 hr earlier than the first motorcycle. The third motorcycle arrived at Q 2 hr earlier than the first motorcycle, travelling half the time with the speed of the first motorcycle and the other half at the speed of the second motorcycle. The distance between P and Q is a )120 km b)150 km c)180 km d)210 km
@scrabbler Just a very basic question
"In how many ways can 4 soldiers be made to stand in 2 rows with 2 soldiers in each row"
According to me the answer shud be 4P2 *2P2....but the ans is given as 4P2 *2P2 * 2!
For eg. if I take ABCD then..I will get AB,AC,AD,BC,BD,CD and their permutations in the first row and the correspondin two alphabets in the 2nd row with its permutations ...so we get all the arrangements so why is 2 multiplied again ...Where am I going wrong in this??
find the remainder when 39! is divided by 41 ?
3 friends A,B,C had a total of N marbles with them,. If the product of no of marbles with each of them is 36, How many distinct values of N are possible??
The total number of permutations of n (> 1) different things taken not more than 'r' at a time, when each thing may be repeated any number of times is?
Hi Puys,
If the below helps please read and share,
How to find out last two digits of a number
Finding out last two digits of a number is a skill that will help you not only solve some tough questions but quickly eliminate a few wrong options as well. Also, it is a skill that you can develop and master in less than 15 minutes. All you need to do is to remember a few rules and the rest will follow. Read more- Click Here
Good Luck!
Find the remainder when 123456789101112....40 is divided by 36 ??
If n is a natural number, find the remainder on dividing (10^n - 7) by 6, n>20.
All the water in a big tank A is emptied into two smaller empty tanks B and C.The volume of water in C is 100/3% of that in A.If 300 litres of water, which had gone into B had instead gone into C, B would have 50% more water than C.What was the volume of water in A?