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Number system worksheet-7

Multiple choice questions:
  1. The sum of two odd numbers is ______ an even number.
(A) Always                (B) Never                    (C) Sometimes            (D) None of these
 
  1. ______ is the key to find that the number is multiple of 3 or not.
(A) The sum of all the digits of a number should be largest even number.
(B) The sum of all the digits of a number should be divisible by second smallest odd natural number.
(C) The sum of all the digits of a number should be divisible by smallest even number.
(D) None of above.
 
  1. The number is divisible by 6. So; it is divisible by _____ and ______ also.
(A) 2, 3                        (B) 5, 2                        (C) 3, 5                        (D) None
 
  1. If 24 is divisible by 4 so, we can say that _______ is also divisible by 4.
(A) 245123                 (B) 251234                  (C) 512324                  (D) 451322
 
  1. In the order of operation, the predecessor of multiplication is ________ operation.
(A) Division               (B) subtraction          (C) Addition               (D) Any of the above.
 
  1. Among four operator, ____ is used at the last in order of operation.
(A) +                           (B) –                            (C) x                            (D) ÷
 
  1. 5986236 is divisible by _______ because _______ is divisible by 4.
(A) 2, 5986236         (B) 3, 236                    (C) 4, 36                      (D) 6, two digit
 
  1. The digit at units place is 5 and the sum of all the digits is a factor of 3, we can say that the number is divisible by ______.
(A) Either 5 or 3       (B) ‘5 and 3 ‘both       (C) Neither 5 nor 3    (D) None of above
 
  1. 8 is_______ of40. And______ of 4.
(A) Factor, multiple (B) Multiple, factor   (C) Multiplier, factor (D) Divisible, multiplier
 
  1. If any number has _______ factors then it is known as ‘prime number.
(A) 3                            (B) Exactly 3               (C) At least 1              (D) Exactly two
 
  1. A number has exactly three factors, known as _____
(A) Prime number                                         (B) Composite number
(C) Factors                                                      (D) Divisor
 
  1. ______is a common factor of 91 and 49.
(A) 91                          (B) 7                            (C) 13                          (D) 49
 
  1. If I have 19 marbles and my brother has 23 marbles. We both have _______ number of marbles.
(A) Prime                   (B) Composite           (C) Twin prime.       (D) None of these
 
  1. Prime number______ composite number.
(A) ≠                           (B) ≥                            (C) ≤                            (D) =
 
  1. 0 is _______ number.
(A) Neither ‘prime’ nor ‘composite’           (B) Either ‘prime’ or ‘composite’
(C) None of above                                          (D) Prime.
 
  1. ‘O’ and ‘1’ both are the elements of _______ numbers but both are not the elements of _______ numbers.
(A) Prime, composite                                     (B) Natural, prime
(C) Natural, whole                                          (D) Whole, natural.
 
  1. _______ is the rule for more than one operation.
(A) B A D M A S       (B) B O D M A S       (C) D A M S               (D) B E D M A S
 
  1. Find the expanded form of number; 2,84,231
(A) 2, 00, 000 + 80,000 + 4,000 + 200 + 30 + 1
(B) 2, 00, 00 + 80,000 + 4,000 + 200 + 30 + 1
(C) 2, 00, 000 + 80, 00 + 4,000 + 200 + 30 + 1
(D) 2, 00, 000 + 80,000 + 4, 00 + 200 + 30 + 1
 
  1. Find the standard numeral for given expansion: 7,00,00,000 + 1,00,000 + 30,000 + 20 + 6
(A) 7,01,30,26             (B) 7, 01, 30, 026        (C). 7,01,3,026            (D) 7,1,30,026
 
  1. Find the standard numeral for given expansion: 30,00,000 + 6,00,000 + 20,000 + 3,000 + 40 + 7
(A) 36023,047             (B) 36, 2347                (C) 36, 20347              (D) 36, 23,047

 

Answer Key

  1. (A)

  2. (B)

  3. (A)

  4. (C)

  5. (A)

  6. (B)

  7. (C)

  8. (B)

  9. (A)

  10. (D)

  11. (B)

  12. (B)

  13. (A)

  14. (A)

  15. (A)

  16. (D)

  17. (B)

  18. (A)

  19. (B)

  20. (D)