There are three classes X,Y and Z. Average of class X is 83. Average of Class Y is 76. Average of class Z is 85. Average of class X and Y is 79, average of class Y and Z is 81. Find average of three Classes.
a.81 b.81.5 c.82 d.84
tarun g Sayscan someone explain the logic behind this question?
i am getting 1/1016 ...OA kehta hai pi/2040......
kya gadbad hai...OA yaa humari approach.....
consider a circle with unit radius. There are 7 adjacent sectors in it s1....s7 such that there total area is 1/8 of the area of the circle. The area of the j th sector is twice that of the j-1 th sector for j = 2,3,4..7. Find the ratio of s1 to the circle.
If there are 209 students..
P says 133 are females.
Q says 132 are females.
Clearly, Q is a female.
If there are 209*2 students, P would say there are 266 females and Q would say there are 264. Clearly, this data is inconsistent.
So, I and III are correct.
@N(P+K) bhais: abhi shikayat karta hoon Chill sir se
Two classmates P and Q have a conversation as below.
P: 7/11 of my classmates are females.
Q: That is interesting, because 12/19 of my classmates are females.
Assuming that both P and Q speak the truth, which of the following statements are true?
I. Q is a female.
II. P is a female.
III. There are a total of 209 students in the class.
(1) Only II and III
(2) Only I
(3) Only I and III
(4) None of the statements are true.
noblekalra Saysonly I and III my take....
A father is aged three times more than his son Ronit. After 8 years, he would be two and a half times of Ronit's age. After further 8 years, how many times would he be of Ronit's age ?
a). 2 times
b). 5/2 times
c). 11/4 times
d). 3 times
7-a+7-b+7-c+7-d=21
a+b+c+d=7
10C3 ways
There are 4 subjects namely a,b,c,d in an examination. In how many ways, a student can score a total of exactly 21 where all the individual subject scores are below 7?
*padke bachha question laga tha, par kuchh to gadbad hai bhailog.
Q. No. of integral solution of x + |y| + z = 10 ??
1. 402
2. 304
3. 202
4. 502