2.How many different 7 digit numbers are there the sum of whose digits are odd?
a) 45*10^5 b) 24*10^5 c) 224320 d) None of these
3. Seven different objects must be divided among three people. In how many ways can this be done if at least one of them gets exactly 1 object?
a) 2484 b) 1218 c) 729 d) None of these
4.A test consists of four sections.Each section has a maximum of 45 marks.Find the number of ways in which a student can qualify in the test if the qualifying marks is 90.
a) 36546 b) 6296 c) 64906 d) None of these
5.How many 6 digit numbers contain exactly 4 different digits?
a) 4536 b) 294840 c) 191520 d) None of these
6.The number of natural numbers of two or more than two digits in which digits from left to right are in increasing order is
There are two distinct natural numbers.Each is first increased by 10 and den by the same percentage as each was increased for the first time.Each number finally results in 72.Find the diff. between the numbers.
An agent gets a commision of 2.5% on the sales of the cloth. If on certain day, he gets Rs. 12.50 as commission, the cloth sold through him on that day is worth:
In a town the population was 8000. In one year, male population increased by 10% and the female population increased by 8% but the total population increased by 9%. The number of males in the town was:
The combined income of A, B and C is 80000. Their expenditures are 8000, 12000 and 15000, respectively. If their savings are in the ratio of 2:3:4, find the income of B.
Cucumber contains 99% water. Ramesh buys 100 kg of cucumbers. After 30 days of storing the cucumbers lose some water. They now contain 98% water. What is the total weight of cucumbers now?