Question
Write the following compound statements symbolically:
If ∆ ABC is right angled at B, then m∠A + m∠C = 90°.
If ∆ ABC is right angled at B, then m∠A + m∠C = 90°.
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| X | $0$ | $1$ | $2$ | $3$ | $4$ |
| P(X) | $0.1$ | $0.5$ | $0.2$ | $− 0.1$ | $0.2$ |