UPSC Exam  >  UPSC Questions  >  What is the remainder when[(919) + 6] is divi... Start Learning for Free
What is the remainder when [(919) + 6]  is divided by 8
  • a)
    6
  • b)
    7
  • c)
    0
  • d)
    3
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
What is the remainder when[(919) + 6] is divided by 8a)6b)7c)0d)3Corre...
The given expression is in the form (x19) + c; where ‘c’ is a constant ……….(a polynomial in x).
Now 8 = 9 ­ 1; means a polynomial in the form of x ­ 1
So according to the remainder theorem when a polynomial is divided by another of the form     x ­ 1, the remainder is equal to p(1) where p is the polynomial itself. So using remainder theorem, the remainder is (119) + 6 = 1 + 6 = 7 (option ‘B’)
View all questions of this test
Most Upvoted Answer
What is the remainder when[(919) + 6] is divided by 8a)6b)7c)0d)3Corre...
I can solve the sum to easy method;

Take a common factor 9(1power 19 +6/9)
=9(1+2/3)
=9(5/3)
=3×5=15
so we written as 15÷8=remainder 7
Free Test
Community Answer
What is the remainder when[(919) + 6] is divided by 8a)6b)7c)0d)3Corre...
To find the remainder when [(919) ^ 6] is divided by 8, we can apply the concept of modular arithmetic.

Modular arithmetic is a system of arithmetic for integers, where numbers "wrap around" upon reaching a certain value called the modulus. In this case, we are working with a modulus of 8.

To find the remainder, we need to find the value of [(919) ^ 6] modulo 8.

Step 1: Simplify the base
We can start by simplifying the base, which is 919.

919 ≡ 7 (mod 8)

This means that 919 is congruent to 7 modulo 8.

Step 2: Apply the exponent
Next, we can apply the exponent of 6 to the simplified base.

(919) ^ 6 ≡ (7) ^ 6 (mod 8)

Step 3: Calculate the exponent modulo 8
To simplify the exponent, we can find the remainder when 6 is divided by 8.

6 ≡ 6 (mod 8)

Since 6 is already less than 8, the remainder is simply 6.

Step 4: Calculate the base raised to the simplified exponent modulo 8
Now, we can calculate (7) ^ 6 modulo 8.

(7) ^ 6 ≡ (7 ^ 6) (mod 8)

To find the value of (7 ^ 6) modulo 8, we can expand the exponent and evaluate each term modulo 8.

(7 ^ 6) ≡ (7 * 7 * 7 * 7 * 7 * 7) (mod 8)

Since we are working with modulo 8, we only need to consider the remainder when each term is divided by 8.

(7 * 7 * 7 * 7 * 7 * 7) ≡ (49 * 49 * 49) ≡ (1 * 1 * 1) ≡ 1 (mod 8)

Therefore, (7 ^ 6) modulo 8 is equal to 1.

Step 5: Calculate the remainder
Finally, we can substitute the simplified exponent back into the equation to find the remainder.

(919) ^ 6 ≡ (7) ^ 6 ≡ 1 (mod 8)

The remainder when [(919) ^ 6] is divided by 8 is 1.

Therefore, the correct answer is option B) 1.
Explore Courses for UPSC exam
Question Description
What is the remainder when[(919) + 6] is divided by 8a)6b)7c)0d)3Correct answer is option 'B'. Can you explain this answer? for UPSC 2025 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about What is the remainder when[(919) + 6] is divided by 8a)6b)7c)0d)3Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for UPSC 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What is the remainder when[(919) + 6] is divided by 8a)6b)7c)0d)3Correct answer is option 'B'. Can you explain this answer?.
Solutions for What is the remainder when[(919) + 6] is divided by 8a)6b)7c)0d)3Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for UPSC. Download more important topics, notes, lectures and mock test series for UPSC Exam by signing up for free.
Here you can find the meaning of What is the remainder when[(919) + 6] is divided by 8a)6b)7c)0d)3Correct answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of What is the remainder when[(919) + 6] is divided by 8a)6b)7c)0d)3Correct answer is option 'B'. Can you explain this answer?, a detailed solution for What is the remainder when[(919) + 6] is divided by 8a)6b)7c)0d)3Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of What is the remainder when[(919) + 6] is divided by 8a)6b)7c)0d)3Correct answer is option 'B'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice What is the remainder when[(919) + 6] is divided by 8a)6b)7c)0d)3Correct answer is option 'B'. Can you explain this answer? tests, examples and also practice UPSC tests.
Explore Courses for UPSC exam
Signup to solve all Doubts
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev