Can you help me with the approach. In how many ways can 20 apples be distributed among 3 children such that none of them get more than 8?
OA-120 My ans-160
EASY TRICK TO FIND OUT SQUARE OF NUMBERS THAT END WITH 5
for how many positive integral values of N, less than 40 does the equation 3x - NY = 5 have no integer solution
1) none
2) 13
3) 11
4) 8
Please help.
i solved it like a^2 + b^2 >= 2ab
2>= 2ab
1>=ab
the only option that satisfied this condition in 3. but iys where i went wrong?
Aswin counted the digits used to number the pages of a book and found that the total number of digits used was 3,481. Find the number of pages in the book.
Which one is bigger 1000^1000 or 1001^999? I tried solving it using log(base10). Any other better method for this kind of problems. @vishiac @summi_arora
Please help!!
If we draw 10 lines in a plane, at most how many bounded regions will the plane be divided into?
can anyone help me with the approach
Any method to solve this kind of examples.
In this question- "Two dice are tossed. The probability that the total score is a prime number is"
the total number of outcomes should be 12C2? because for addition we just have to choose two numbers from our sample space of (1,2,3,4,5,6,1,2,3,4,5,6). Is my reasoning wrong? If yes then where?
how to solve?
Q- There are 10 seats around a circular table. If 8 men and 2 women have to seated around a circular table, such that the two women are not separated. If P and Q denote the respective number of ways of seating these people around a table when seats are numbered and unnumbered, then P: Q equals:
NEVERMIND GUYS DONT WASTE YOUR TIME COMMENTING HERE, I GOT IT. THANKYOU FOR READING!! (ans is 10:1 btw)
HELP HELP HELP!!!
Q-
Find the number of integral solutions to the equation
|x| + |y| + |z| = 15
My attempt- solved for x+y+z=15 which will be 17!/15!*2! and then multiplied this by 2*2*2 because x,y and z all of them can be either positive or negative.
What am i doing wrong here? whats wrong with my reasoning?
The lock on a safe consists of three wheels, each of which may be set in eight different positions. Due to a defect in the safe mechanism the door will open if any two of the three wheels are in the correct position. What is the smallest number of combinations that must be tried if one is to guarantee being able to open the safe (assuming that the “right combination” is not known)?
There are 10 stations between A and B. The number of different kind of tickets to be printed so that passenger can make a reservation between any two station is? Don't know the answer.. But approach??
HELPPPPP
In how many different ways can three persons A, B, C having 6, 7 and 8 one rupee coins respectively donate Rs.10 collectively?
Detailed Approach please.
A man, starting from a point P, takes exactly four equal steps. Each step is in one of the four directions – East, West, North and South. What is the total number of
ways in which the man ends up at point P after the four steps?
HELP HELP PLZ
In a two team basketball play-off, the winner is the first team to win m games. How many different outcomes are there in a " 2 out of 3 " play-off?
Ans:- 2.4