Numbers

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Question 1

If the sum of two numbers is 13 and the sum of their square is 85. Find the numbers?

  • A

    6 & 7

  • B

    5 & 8

  • C

    4 & 9

  • D

    3 & 10

Question 2

The difference between a two-digit number and the number obtained by interchanging the positions of its digits is 36. What is the difference between the two digits of that number?

  • A

    4

  • B

    5

  • C

    6

  • D

    None of these

Question 3

A two-digit number is such that the product of the digits is 12. When 9 is subtracted from the number, the digits are reversed. The number is:

  • A

    34

  • B

    62

  • C

    43

  • D

    26

Question 4

Find a positive number which when increased by 16 is equal to 80 times the reciprocal of the number

  • A

    20

  • B

    -4

  • C

    -10

  • D

    4

Question 5

What is the sum of two consecutive odd numbers, the difference of whose squares is 56?

  • A

    30

  • B

    28

  • C

    34

  • D

    32

Question 6

The product of two numbers is 108 and the sum of their squares is 225. The difference of the number is:

  • A

    5

  • B

    4

  • C

    3

  • D

    None of these

Question 7

What is the sum of the first 50 natural numbers?

  • A

    1325

  • B

    1225

  • C

    1275

  • D

    1270

Question 8

What is the unit's digit in the product (267)153 x (66666)72 ?

  • A

    7

  • B

    6

  • C

    1

  • D

    2

Question 9

What is the total number of prime factors in the expression 1212 x 1616 x 1818 ?

  • A

    46

  • B

    154

  • C

    3456

  • D

    2

Question 10

What should be assigned to # so that 2582#724 is divisible by 11 ?
  • A
    4
  • B
    5
  • C
    6
  • D
    7

There are 16 questions to complete.

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