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SEAMO 2018 — Paper D — Grade 7–8 Question 6

SEAMO · SEAMO 2018 — Paper D — Grade 7–8

Question 6

How many digits are in $4^{22}\times5^{40}$?
  1. $22$
  2. $23$
  3. $40$
  4. $42$
  5. None of the above