Evaluate 23 x 54 (mod 7)

  • A 2
  • B 3
  • C 5
  • D 6
waec 2022mathematics

The correct answer is B. 3

23 x 54 = 1242

In mod 7; 

1242 Ã· 7 = 177 R 3 

Hence; 1242 â‰¡ 3

Previous question Next question