Quiz Discussion

The Unit digit in the product (784 X 618 X 917 X463)

• 1] 1
• 2] 2
• 3] 3
• 4] 4

106 X 106 - 94 X 94

• 1] 9440
• 2] 9600
• 3] 9640
• 4] 9755

What is the unit digit in (4137) ⁷⁵⁴?

• 1]

  7

• 2]

  8

• 3]

  9

• 4]

  6

The smallest 3 digit prime number is:

• 1]

  101

• 2]

  103

• 3]

  109

• 4]

  113

If -1 ≤ a ≤ 2 and 1 ≤ b ≤ 3, then least possible value of (2a – 3b) is:

• 1]

  -7

• 2]

  -4

• 3]

  -8

• 4]

  -11

72519 X 9999

• 1] 725117481
• 2] 834782931
• 3] 747829383
• 4] 648392011

A girl multiplies 987 by a certain number and obtains 559981 as her answer. If in the answer, both 9’s are wrong but the other digits are correct, then the correct answer will be

• 1]

  555681

• 2]

  545681

• 3]

  544581

• 4]

  555490

What is the unit digit in 27^20?

• 1]

  1

• 2]

  2

• 3]

  3

• 4]

  4

The difference between the local value and the face value of 7 in the numeral 32675149 is

• 1]

  75142

• 2]

  64851

• 3]

  5149

• 4]

  69993

(1000)^9 / 10^24 =

• 1] 10
• 2] 100
• 3] 1000
• 4] 10000