Number System MCQs with Answers Exercise V

Ques 1 Number System

If the nine-digit number ‘8475639AB’ is divisible by 99, then what is the value of A and B ?
  a) A = 4, B = 6
  b) A = 4, B = 8
  c) A = 6, B = 7
  d) A = 2, B = 2

Ques 2 Number System

If a nine-digit number 489x6378y is divisible by 72, then the value of √(8x + 6y) will be:
  a) 2
  b) 4
  c) 6
  d) 8

Ques 3 Number System

The unit digit in the product 122¹⁷³ is...
  a) 3
  b) 4
  c) 9
  d) 2