If you fail, never give up because FAIL means 'First Attempt In Learning'.— A. P. J. Abdul Kalam

Mathematical Operations — quick quiz

5 real SOF IMO questions on Mathematical Operations. Instant scoring and solutions, no signup — see where you stand in ~3 minutes.

Question 1 of 5

MEDIUM

If '×' means '+', '+' means '÷', '÷' means '−', and '−' means '×', find the value of 20 − 5 + 10 × 15.