Home Maths Permutations & Combination Mix In a certain test there are questions. In t…
Maths Permutations & Combination Mix Single Correct MCQ
Published on: August 13, 2026

In a certain test there are questions. In the test students gave wrong answers to at least questions, where . If the total number of wrong answers given is 2047, then is equal to

A
10
B
11
C
12
D
13

Share this question

WhatsApp

For Instagram sharing, use “Apps” on mobile or copy the link.

Text Solution

Verified by Experts
The correct answer is:
B

Since the number of students giving wrong answers to at least question .

The number of students answering exactly questions wrongly = {the number of students answering at least questions wrongly, – {the number of students answering at least questions wrongly .

Now, the number of students answering all the questions wrongly .

Thus the total number of wrong answers

=

As given

Previous Question Next Question

Prepare Smarter with CGP Edu

Get practice questions, solutions, and test series in one place.

Write a Review

Share your experience with this question and solution.

Commentary

Send your comment, doubt, correction, or feedback to admin.

Student Reviews

What students say about this solution

No reviews yet. Be the first to write a review.

Similar Questions

Explore conceptually related problems

A polygone has 170 diagonals then find the number of its sides.
Number of ways in which n distinct objects can be kept into two identical boxes that no box remains…
Let A = {x, y,z, w}, B = {a, b, c, d} The no. of bijection from A → → B such that f(x) ≠ ≠ a, f(y) …
The interior angles of regular polygon measure 150 0 each. The number of diagonals of the polygon is
How many numbers can is chosen at random from first one hundred natural numbers such that
The number of integers which lie between 1 and 10 6 and which have the sum of the digits equal to 1…
CG
CGP Question Assistant Question Bank + AI Help
Hi! Type your question or upload one screenshot. First I will search related questions from CGP Edu Question Bank. If none match, type YES and I will solve it with AI.
Upload only one screenshot at a time. Flow: Question Bank first → If not matched, type YES for AI solution.