CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

A mathematician trying to cross a street happened to witness a bank robbery. When the police questioned him, he stated that the number plate of the van in which the thieves escaped had its last four digits as follows:
The first digit is 5. The last digit is the square of the second digit. The third digit is twice the second digit. Also, he noticed the sum of digits to be “9”. What is the quadratic equation that the police need to frame to find the 2nd digit, given that ‘b’ is the second digit?


A

b2+2b3=0

No worries! We‘ve got your back. Try BYJU‘S free classes today!
B

4b+5=9

No worries! We‘ve got your back. Try BYJU‘S free classes today!
C

b2+3b4=0

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D

b39=0

No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C

b2+3b4=0


Given that 2nd digit to be ‘b’, the registration number would be ‘5 b 2b b2’.
The sum of the digits is b2+2b+b+5 which is given to be equal to ‘9’.
b2+3b+5=9
Therefore the quadratic equation is
b2+3b4=0


flag
Suggest Corrections
thumbs-up
0
similar_icon
Similar questions
View More
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Introduction
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
CrossIcon