Express 0.000452 in proper scientific notation.

  • 4.52 × 10^-4
  • 452 × 10^-6
  • 0.452 × 10^-3
  • 45.2 × 10^-5
  • 4.52 × 10^-4

Select all pairs of positive integers that have HCF 6 and LCM 180

  • 12 and 90
  • 18 and 60
  • 30 and 36
  • 24 and 45
  • 12 and 90
  • 18 and 60
  • 30 and 36



Find the pair(s) of consecutive integers whose product is 56. Select all correct pairs.

  • 7 and 8
  • -8 and -7
  • 6 and 9
  • -7 and -6
  • 7 and 8
  • -8 and -7