Number System Quantitative Aptitude Exercise I

Ques 1 Number System

Find the number of trailing zero in 100! ?
  a) 20
  b) 22
  c) 24
  d) 25

Ques 2 Number System

Find the number of Unit Digit of 13⁴⁵ ?
  a) 3
  b) 9
  c) 7
  d) 1

Ques 3 Number System

What is the greatest five-digit number that is completely divisible by 8, 15, 16, 21 and 5 ?
  a) 95760
  b) 95765
  c) 95120
  d) 95769

Ques 4 Number System

When (2²⁴ – 1) is divided by 7 , the remainder is
  a) 4
  b) 2
  c) 1
  d) 0

Ques 5 Number System

If the five-digit number 672 xy is divisible by 3, 7 and 11, then what is the value of (6x + 5y) ?
  a) 16
  b) 32
  c) 17
  d) 43

Ques 6 Number System

If the nine-digit number 87605x31y is divisible by 72, then the value of 2x-3y is:
  a) 0
  b) 1
  c) 2
  d) 3

Ques 7 Number System

If 71⁸³ +73⁸³ is divided by 36, the remainder is:
  a) 0
  b) 4
  c) 7
  d) 9

Ques 8 Number System

If 31⁴⁷ +43⁴⁷ is divided by 37, the remainder is:
  a) 0
  b) 4
  c) 7
  d) 9

Ques 9 Number System

If the number 4A306768B2 is divisible by both 8 and 11, then the smallest possible values of A and B will be
  a) A = 3, B = 5
  b) A = 5, B = 4
  c) A = 5, B = 2
  d) A = 5, B = 3

Ques 10 Number System

The unit digit in the product (124)³⁷² + (124³⁷³ is.
  a) 10y+8
  b) y+8
  c) 11y-8
  d) y-8