The cost price of watermelon is Rs. 420 and it's selling price is Rs. 720. The cost price is increased by 20% but the selling price remains constant. For a weight of 30 kilograms how much the trader should weigh so that he is having the same percentage profit?
A.24
B.25
C.35
D.36
E.none of these
please show your approach as well 😁
Let N= 111......1111(73 times). When N is divided by 259, remainder is R1 and when N is divided by 32 , remainder is R2..What is R1+R2 ?
(no oa available)
find HCF AND LCM of 2222........30 times and 333333333........70 times ?😴😴😲😲
A is 50 % more efficiant than B,B is 25% more efficiant than C...if A finishes the particular task in 20 days the C will finish the task in how many days?
There are two Arithmetic Progressions A and B such that their nth terms are given by An = 101 + 3(n – 1) and Bn = 150 + (n – 1), where n is the set of natural numbers. The first 50 terms of A and B are written alternately i.e. A1B1A2B2…..A50B50. What is the remainder when the number so formed is divided by 11?(a) 0 (b) 1 (c) 9 (d) 10👍
How many divisors of 25200 can be expressed in the form 4n + 3, where n is a whole number?(a) 6 (b) 8 (c) 9 (d) None of these👍
U = 5(log2x)^2 – 5(log2x) – 8, where x is a real number. If x^U = 16, find the value of x.(a) 1 (b) 2 (c) 4 (d) 8👍
n is a natural number such that nC4 = nC12 . What is the remainder when n! is divided by n + 1?(a) n – 1 (b) n –2 (c) n (n) 0
EASY
The HCF of three natural numbers x, y and z is 13. If the sum of x, y and z is 117, then how many ordered triplets (x, y, z) exist?(a) 28 (b) 27 (c) 54 (d) 55👍
There are 13 equidistant bus stops on a straight road. A bus running at 60 km/hr is some distance away from the 1st stop from where it will move towards the 13th stop. Two cars start running from the 6th stop in opposite directions with the same speed. If the bus meets one of the cars at the 1ststop and the other at the 13th stop, then find the speed of the cars.(a) 10 km/hr (b) 20 km/hr (c) 30 km/hr (d) Cannot be determined👍
How many 4-digit multiples of 3 can be formed using the digits 2 and 3 only?(a) 4 (b) 6 (c) 5 (d) 717.
If m and n are positive integers such that (m-n)^2=4mn/(m+n-1) then how many pairs (m, n) are possible?(a) 4 (b) 10 (c) 16 (d) Infinite👍.
The digits of a 3-digit number in Base 4 get reversed when it is converted into Base 3. How many such numbers exist?(a) 0 (b) 1 (c) 2 (d) 3😁
Find the remainder when 100^3+101^3+102^3+103^3--------198^3 is divided by 9
a>0
b>1
c>3
d>7
approach please
Puys please post the solution to yhis........
Q) In a tournament each of the participants was to play 1 match against each of the other participants. 3 players fell ill after each of them had played 3 matches and had to leave the tournament. What was the total number of participants in the beginning if the number of matches played was 75.[Ans:15]
Each root of the equation ax^3 – 7x^2 + cx + 231 = 0 is an integer. One of the roots is−1/2 times the sum of the other two roots. What is the sum of all the possible values of a?(a) 17 (b) –7 (c) –17 (d) None of these
PLZ help bugged like anything
A society of 380 people organized a tournament comprising three different games. The number of people who participated in at least two games was 42% more than those who participated in exactly one game. At least one person participated in exactly n games, where n = 1, 2, 3. If the number of people who did not participate in any of the three games was minimum possible, then what was the maximum possible number of people who participated in exactly two games?
- 150
- 213
- 212
- 149
0 voters
If a and b are integers such that log2 (a + b) + log2 (a − b) = 3, then how many different pairs(a, b) are possible?(a) 0 (b) 1 (c) 2 (d) 3
(log base 2)👍