The Gateway to Computer Science Excellence

+2 votes

Best answer

**Ans is option D.**

10's compliment of base 10 number X with n digits = 10^{n} - X

here, n = 5, X = RPRP0

hence

100000 - RPRP0 = 47Q80

from unit place : 0-0 = 0

then, 10 - P = 8. Hence P =2.

then, 9 - R = Q ( compute this later) ...(1)

then 9 - P = 7. Confirmation of P =2.

then, 9 - R = 4. hence R =5.

again from eq (1), 9-R = Q => 9-5 = 4, hence Q =4.

**P = 2, Q=4, R =5**

- All categories
- General Aptitude 1.9k
- Engineering Mathematics 7.5k
- Digital Logic 2.9k
- Programming and DS 4.9k
- Algorithms 4.4k
- Theory of Computation 6.2k
- Compiler Design 2.1k
- Databases 4.1k
- CO and Architecture 3.4k
- Computer Networks 4.2k
- Non GATE 1.4k
- Others 1.4k
- Admissions 595
- Exam Queries 573
- Tier 1 Placement Questions 23
- Job Queries 72
- Projects 18

50,741 questions

57,251 answers

198,045 comments

104,670 users