If 5-digit number 535ab is divisible by 3, 7, 11, then what is the value of (a²-b²+ab)? | StudyFlash MCQ

Maths Number System

If 5-digit number 535ab is divisible by 3, 7, 11, then what is the value of (a²-b²+ab)?

यदि 5 अंकों की संख्या 535ab, 3, 7, 11 से विभाज्य है, तो (a²-b²+ab) का मान क्या है?

A

(a) 83

B

(b) 95

C

(c) 91

D

(d) 90

Correct Answer: Option A

Explanation / व्याख्या:

LCM(3,7,11)=231. 535ab div by 231: 535ab=231×232=53592. a=9,b=2. a²-b²+ab=81-4+18=95.

535ab=53592। a=9,b=2। 81-4+18=95।

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