What is the sum of all 5 digit nos that are formed by using 1,3, 5, 7, 9 taken one at a time? Options: A . &nbsp5555500 B . &nbsp66600 C . &nbsp6666600 D . &nbsp666600 E . &nbsp118

Answer: Option C : C The sum is given by (n-1)! × (sum of all the digits) × (1111...n times) Here n=5 Sum = 4! *(25)*(11111) = 6666600 option (c)

What is the sum of all 5 digit nos that are formed by using 1,3, 5, 7, 9 t

Question

What is the sum of all 5 digit nos that are formed by using 1,3, 5, 7, 9 taken one at a time?

Answer: Option C
:
C
The sum is given by (n-1)!

\times

(sum of all the digits)

\times

(1111...n times)
Here n=5
Sum = 4! *(25)*(11111) = 6666600 option (c)

Was this answer helpful ?

Next Question

Question 1. A group of students equal in number to the square root of half the whole class is selected for a project. Two more stude....leave. Find the total number of students in the class?

Question 2. The sum of n terms of an AP is 4pn(n+3).The sum of squares of these terms is:....

Question 3. If m times the mth term of an AP is equal to n times its nth term, find the (m+n)th ....that AP. Given that m is not equal to n.

Question 4. The number of integral values of a for which (5a−1)<(a+1)2<7a−3 ___.....

Question 5. A plane MH370 is reported to have crashed somewhere in the rectangular region shown in fig. The probability that it cras....value of 'P'. Type the answer in the blank below: ___

Question 6. If three positive real numbers x, y, z satisfy y - x = z - y and xyz = 4, then what is the minimum possible value o....4, then what is the minimum possible value of y ?

Question 7. In the cube shown below, the difference in length between line segment QR and line segment PQ is approximately what pe....segment PQ is approximately what percentage of the distance from P to R?

Question 8. If a ≠ b, and ab ≠ 0, then when a is replaced by 1a and b is replaced by ....by 1b everywhere in the expression (a+b)(a−b), the resulting expression is equal to

Question 9. How many natural numbers are there such that their factorials are ending with 5 zeroes?....

Question 10. If three consecutive numbers are selected randomly from the first 100 natural numbers, then what is the probability....that their product of the three numbers is divisible by 24?

Chapter 1 - GLOBAL STEEL SCENARIO & INDIAN STEEL INDUSTRY Part 1 : (13-04-2024) INDUSTRY AND COMPANY AWARENESS (ICA)

Direction Sense Test Part 1 Reasoning (Hindi)

Chapter 1 - RMHP / OHP / OB & BP Part 1 : (14-02-2024) GPOE

Cube & Cuboid Part 1 Reasoning (Hindi)

Data Interpretation (DI) Basic Concept Reasoning (Hindi)

Counting Figures Part 1 Counting Of Straight Lines Reasoning (Hindi)

Sail E0 free webinar Webinars

Real Numbers Part 7 Class 10 Maths

Real Numbers Part 1 Class 10 Maths

Polynomials Part 1 Class 10 Maths

Pie Chart - Test Paper 1 Data Interpretation Reasoning & DI

Tabulation - Test Paper 2 Data Interpretation Reasoning & DI

Test Paper 1 Direction Sense Test Reasoning & DI

ICA , RDIC,GFM Free Modal Test Paper - Non - Technical Branch Old Syllabus 2022 - SAIL Junior Officer E0

GFM Combined 1 Free Revision Test SAIL JO E-0