Doubts,Solve these problems
1.Table below gives some details regarding the number of students of a class to play or
don’t play various games among Basketball, Football, Cricket, Volleyball and baseball.
Students don’t playing Number of students
Basketball 10
Football 13
Cricket 18
Volleyball 20
Baseball 25
Any of the games 10
Which of the following statement is necessarily true of the number of students N who don’t play one or more of the 5 games.
(a) 24≤N≤46 (b) 25≤N≤46 (c) 25≤N≤45 (d) Non of these
2.In a sample of 100 students 60% of the students had a problem of time management,
50% of the students had a problem of fund and 40% students were just ‘scared’.
(A)What is the maximum number of students with all the problem if all of them had at least one of the problem?
(a) 40 % (b) 35% (c) 25% (d) Non of these
(B)What is the minimum number of students who had all the three problems if every student had at least one problem?
(a) 0 % (b) 10% (c) 20% (d) Non of these
3.If n is any positive integer, then
111…………..1 - 222……………..2 = ?
(n times) (n times)
(a) (44……………..4)²
(n times)
(b) (33……………..3)²
(n times)
(c) (33……………..3)²
(2n times)
(d) (44……………..4)²
(2n times)
3.If n is any positive integer, then
111…………..1 - 222……………..2 = ?
(n times) (n times)
(a) (44……………..4)²
(n times)
(b) (33……………..3)²
(n times)
(c) (33……………..3)²
(2n times)
(d) (44……………..4)²
(2n times)
Hello cat_aspirant,
I think that the given problem posted is wrong.
In the first line, it should have been
111…………..1 - 222……………..2 = ?
(2n times) (n times)
and then you can put values of n and check for the correct answer.
Example:
Put n = 1 and you will get: 11 - 2 = 9 = (3)2
Put n = 2 and you will get: 1111 - 22 = 1089 = (33)2
Put n = 3 and you will get: 111111 - 222 = 110889 = (333)2
Now, we can clearly see that option (b) is the correct answer.
Thank You.
Ravi Raja
n/a
hello RAVI, may i know wat r u doing right now? r u an engg student or general graduate? hav u completed graduation or coninuing right now?
hello vivek thanx 4 d post.bt sry 2 in4m u dat d answer 2 d 1st question z wrong.its 25% nt 40%,i dont know how.so plz try another time.
Hello cat_aspirant
I am just a Graduate and have completed my B.Sc. (Mathematics Honours) from St. Xaviers College (Calcutta) and currently I am into the Teaching Profession. I teach Math to students of CLass XI, XII, and those preparing for B.B.A Entrance Exams, M.B.A. Entrance Exams and for C.A. (CPT).
Ravi Raja
n/a
hello,
its a gr8 job u r doing.still r u interested in appearing CAT or u ll continue wid dis profession?
1 more thing plz answer dis question
what will b the sum of 1+2^1/2+3^1/3+4^1/4+..............................n^1/n
plz try 2 answer it as soon as possible.
Ravi sir,
u r really doing great .please send us some problems & its solution. it would be more helpful for us. reply +vely. take care.
-Renu
Well renu you can join Ravi classes if you are residing in kolkata
Q2A. answer 40%
B. Answer 0%
from ven diagram