Question 3: What is the significance of the 'Double-Check' security feature on the 2023 banknotes?

By: USER8244
28 Agustus 2025 Support 5 minutes
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Grade: Education Subject: Support
Question 3: What is the significance of the 'Double-Check' security feature on the 2023 banknotes?
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The 'Double-Check' security feature, implemented on the 2023 banknotes, utilizes a unique micro-printing pattern that, when viewed under ultraviolet light, reveals a series of hidden images. This provides a highly reliable method for detecting counterfeit bills.
Answered on 28 Agustus 2025

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bonjours
j'ai un exercice que je ne comprends pourriez vous m'aidez
Une urne contient 20 boules rouges numérotées de 1 a 20 et 25 boules blanches numérotés de 1 a 25. on tire une boule au hasard
1-donner sans justifier les probabilités des événements:
A: la boule tirée est rouge
B: la boule tirée porte un numéro pair
C: la boule tirée porte un numéro strictement supérieur a 20
2- définir l'événement A(inter) B puis donner sa probabilité
3-calcu

160 views 500 comments