How many 7's are used in writing out all the positive integers from 1 to 10^8?
- 3.10^7
- 10^7
- 7.10^7
- 8.10^7
0 voters
Of 128 boxes of oranges, each box contains at least 120 and at most 144 oranges. The number of boxes containing the same number of oranges is at least
1.5
2.103
3.6
4.120
👼
Algebra Q:-
a+b+c+d+e =1
a+b+2c+2d+2e =1
a+2b+3c+4d+5e=2
a+b+3c+2d+e=3
then find the true statement:-
1. none can be determined
2. a=-2
3. b=4
4. c
Two persons start from the opposite end of a 90 km straight track and run to and fro between the two ends. The speed of first person is 30 m/s and speed of another person is 125/6 m/s.They continue their motion for 10 hours. How many times they pass each other?
The n terms of an arithmetic progression M are distributed into 4 arithmetic progressions, P, Q, R, S.
P consists of the 1st, 5th , 9th ---- terms of M.
Q consists of the 2nd , 6th , 10th , ---- terms of M.
R consists of the 3rd, 7th, 11th, ---- terms of M.
S consists of all the other terms.
The average of all the terms of P is a term of R.
The average of all the terms of Q is a term of S.
The average of all the terms of R is a term of R.
The average of all the terms of S is a term of S.
Which of the following is a possible value of n?
- 94
- 86
- 84
- 96
0 voters
Harry, a milkman, buys pure milk and adds some water in it before selling. He sells the mixture at a price 10% less than the price of pure milk and makes a profit of 10%. Find the quantity (in litres) of water that he adds to every two litres of pure milk.
1. 4/9
2.2/9
3.2/3
4.None of these
😐 solve & explain
Pia and Ria start running simultaneously from the same point on a circular track of length 4200 m. If they run in opposite directions, they meet for the first time exactly after 2 minutes from the start and they meet at seven distinct points on the track. If they run in the same direction, they meet at three distinct points on the track. How much time (in minutes) does Ria take to complete one round, if she is the slower runner?
1.3.5
2.7
3.10.5
4.None of these
can anyone tell what are the topics to study in coordinate geometry????????
A certain club decides to organise a party in which minimum 60 students can participate with a fees of 2400 per student.and for every student beyond 60 an additional discount of Rs15 per student will be given. find the number of enrollments that will maximise the revenue earned by organising party.
a.110
b.107
c.120
d.116
Hi Aspirants, I couldn't find time to interact with you. Here, I give the links of Geometry: Circle Concepts & Solution for Worksheet.
{www.youtube.com/watch?v=UUh0ORdWxaA...}
{www.youtube.com/watch?v=GHvECvfLa84....} I will give the links to other topic of Geometry and Important topic of CAT shortly.A horse is tied with four ropes of length 10m each which are tethered at four vertices of a square grass lawn of side length 10m. Find the largest area in which the horse can graze the grass. (Let π = 3 and √3 = 1.73)
A. 25m² B. 27m² C. 32m² D. 37m²
PS ... Thhis Question Did not come in CAT 2013 ..Some guys are just provoking moderators by commenting such things 😃
Guys i have an issue regarding my CAT admit card. While filling the form i entered my date of birth correctly but in my admit card confirmation mail its different from the one i entered ? What can i do now to rectify it ? Will it effect my application ?
Guys Please Help.. Please
What is the highest possible value of 'n' for which (11^1024) - 1 is divisible by 2^n and in (10^1024-1)
n is a natural no. how many values of n so that n^2 + 24n +21 has exactly 3 factors.?
Q1 find last 3 digits of N = 10! + 11!...50!
Q2. find the no. of 3 digit no.s that can b expressed as sum of 4 consecutve, 5 cons, and 7 cons, positve integers.
find the minimum value of n for which 16^n when divided by 57 leaves remainder 1
(1)9
(2)36
(3)28
(4) none of the above..
ans:9
My approach:57 = 3*19...as HCF(16,57)=1
so,n = 57 (1-1/3)(1-1/19)=36 i.e, the no. of co-primes
when 16^n is to be considered this is n=36....
but,when it is reduced to 2^4n (as HCF(2,57)=1)=>4n=36 =>n=9
can someone pls correct my approach
Pia and Ria start running simultaneously from the same point on a circular track of length 4200 m. If they run in opposite directions, they meet for the first time exactly after 2 minutes from the start and they meet at seven distinct points on the track. If they run in the same direction, they meet at three distinct points on the track. How much time (in minutes) does Ria take to complete one round, if she is the slower runner?
If x, y, z are the angles (in degrees) of the triangle ABC, where x, y, z are integers, then what is the number of values that (x - y - z) can take??. . .
1.90
2.179
3.178
4.177